- Gate Guardian: As this is the second-most popular 001 proposal. And because this thing is basically a biblical angel, they could somehow be tied into the overall lore surrounding Connor's origins (specifically the demonic entity within him). Something tells me that the Gate Guardian would have a similar appalled reaction to Connor as SCP-2200-1 did...
- O5-13: Given that Episode 8 will feature the O5 Council in some role, maybe there'll be a (joking) claim that O5-13 is in fact SCP-001; which they'll obviously dismiss as just being an absurd hoax.
- When Day Breaks: As this is the most popular 001 proposal after all. Though given the apocalyptic nature of this SCP, it would have to be some sort of What If? scenario set in an alternate timeline/universe.
Now for other SCPs, both well-known and obscure ones:
- SCP-035 (Possessive Mask): Not that the Foundation would intentionally allow an encounter between Connor and the Possessive Mask to happen. But if it does happen by chance, then the Mask will somehow get itself attached to Connor's face, resulting in Connor having to fight with an evil mask-wearing doppelganger.
- SCP-049 (Plague Doctor): Because it'd be interesting to have him appear. Probably voiced by TheVolgun.
- Confirmed. The trailer for Episode 8 shows 049 will indeed appear, and this teaser GIF shows him performing surgery on Connor's dead body.
- Maybe the Plague Doctor will use his Touch of Death to kill Connor multiple times, so that he can turn the resulting corpses into a horde of zombie minions.
- SCP-052 (Time-Traveling Train): This one's very obscure, but it does offer some interesting plot ideas. A Time Travel Episode set in the Big Apple would be cool.
- SCP-053 (The Young Girl): Another immortal brown-haired child. Perhaps Connor will somehow bypass her Hate Plague and bond with her?
- SCP-055 ([unknown]): While the first episode already had a joke alluding to SCP-055 (Connor's roommates talk about a "memory eater" and then instantly forget what they were talking about), maybe 055 can somehow be involved in a future episode's plot... and we still won't know what exactly this thing is.
- SCP-056 (A Beautiful Person): And upon meeting Connor, he'll transform into a hotter, stronger and more unkillable version of him. Bonus points if this "superior" version of Connor is exaggerated for Rule of Funny — I'm picturing a buff, shirtless Long-Haired Pretty Boy. And instead of having Resurrective Immortality, he'll just be Nigh-Invulnerable.
- SCP-073 (Cain) and SCP-076 (Able): Both of these guys are also immortal men who've worked with the Foundation before. Bonus points if an encounter between Connor and Able leads to both of them repeatedly killing each other in a humorously prolonged fight scene.
- SCP-079 (Old AI): If the end of this is any indication, then 079 might have a presence or cameo in a future episode.
- SCP-085 (Hand-Drawn Cassy): This I picture being a Breather Episode for Connor, wherein he just chats with Cassy over his many, many problems.
- SCP-087 (The Stairwell): If only because Connor may be one of few people who can walk down all the way to the bottom of the stairs (assuming they ever do end), and definitely be able to get out and live to tell the tale. For bonus black-comedy slapstick points, he could (accidentally) trip and fall down the steps (or even vault over the railing) to descend even faster.
- SCP-096 (The Shy Guy): Appears in "In the Pines", so he'll probably show up in the series proper. Will likely kill Connor after he looks at his face, only to be confused and frustrated when this particular victim just won't stay dead (much like with SCP-682).
- It's not from Lord Bung, but the closest thing we've got (at least for now) is this fan-made parody music video.
- SCP-105 (Iris): Another human SCP forced to volunteer in service to the Foundation's goals. She could even befriend Connor due to sharing similar living conditions.
- SCP-106 (The Old Man): One of the most iconic SCP monsters, who even cameoed in the "In the Pines" music video. He could be the antagonist of a somewhat darker episode.
- SCP-113 (The Gender-Switcher): Given that Lord Bung came out as being non-binary, and Connor is (kinda) their Author Avatar, it would be unsurprising if this leads to Connor accidentally touching this SCP and getting temporarily transformed into a woman. Of course, this will result in humorously awkward complications in his relationship with Natalie.
- The teasers for Episode 8 reveal that there's a strange city filled with numerous duplicates of Connor, many of whom look either disfigured by injuries or transformed in some way. Maybe one of these Connors will be female, and mentions having come into contact with SCP-113?
- SCP-173 (The Sculpture): Because it just wouldn't be the SCP Foundation without their first-ever creation!
- SCP-222 (Clone Coffin): This one's very obscure, but it has very interesting implications if it's used to clone Connor. Would the clone possess the same powers as the original Connor?
- SCP-231 (Special Personnel Requirements): It would likely be a much darker episode than usual.
- SCP-294 (The Coffee Machine): Connor might use this machine to pour himself a beverage he was craving, or be forced to take drink orders and taste-test some very weird liquids as part of an experiment.
- SCP-423 (Self-Inserting Character): There could be a quick gag in which someone is reading a book or document which contains a conspicuous mention of an individual named "Fred".
- SCP-470 (Nexus of Abandoned Places): This could make a very interesting setting for a future episode, with Connor being sent on a mission to explore this place, and encountering the mysterious being called "Subject R". The execution of this plot idea would likely feel a bit similar to "The Infinite IKEA" episode.
- Bonus: SCP-1730 (What Happened to Site-13?) also appears at the same time. The SCP-470 article mentioned that some rooms from SCP-1730 were among the abandoned places that could be accessed through the Nexus; so this could lead to Connor finding himself trapped inside the ruins of Site-13, and thus must figure out how to escape from there.
- SCP-500 (Panacea): While Connor himself would never need to use this SCP for obvious reasons, it can still be used as a plot device for another character with a very serious illness or injury that must be cured.
- SCP-507 (Reluctant Dimension Hopper): While he already cameoed in "Only Us", he can still reappear in a more directly plot-relevant way. He can meet Connor again, have a friendly casual chat to catch up on what's going on with their lives, and then he accidentally takes Connor along when he suddenly teleports into another dimension.
- SCP-607 (Dorian the Grey Cat): Because of this one-shot comic created by one of the show's animators. And of course, it would be funny to see Connor trying to rid himself of Dorian after the cat causes them to both die multiple times.
- SCP-662 (Butler's Hand Bell): Mr. Deeds would likely be summoned to kill Connor once, then have a polite chat with him after he respawns.
- SCP-682 (Hard-to-Destroy Reptile): Appears in "In the Pines", so he'll probably show up in the series proper. Probably voiced by TheHauntedReader.
- Confirmed, well sort of. A very short video released for April Fools' Day shows a rather uniquely-designed 682 quickly eat Connor. However, 682 is unvoiced.
- Maybe 682 will appear in another special or episode where he at least gets a speaking role, but still looks exactly the same as in the aforementioned April Fools' Day video.
- SCP-735 (Insult Box): Because it would be hilarious.
- SCP-914 (The Clockworks): Because there's got to be something funny/interesting that can happen when Connor (or something else) gets placed inside this machine and set to "Very Fine".
- SCP-953 (Polymorphic Humanoid): If nothing else, she can be used as some sort of Monster of the Week causing mayhem. Being an evil shapeshifter after all, it's quite likely that she would disguise herself as Natalie to lure Connor into a trap or manipulate him.
- SCP-963 (Immortality): Just so that Dr. Bright can show up and force Connor into somehow being involved with another one of Bright's infamous antics. Alternatively, there will be a Battle in the Center of the Mind between Connor and Dr. Bright; in which Connor might be ordered to wear SCP-963-1, so that Bright can communicate with whatever entity is giving Connor his immortality.
- SCP-973 (Smokey): Because someone will make a plan to capture Smokey by using Connor as live bait, confusing the demon cop when his latest victim reappears after being brutally mutilated and eviscerated.
- Bonus: SCP-5740 (all cop are buddy by dado) also appears at the same time. Connor shoves one of the SCP-5740-A "dado-nuts" down Smokey's throat, causing death by explosive pig diarrhea (as a reference to the cross-neutralization incident described in Project Isorropía).
- SCP-974 (Treehouse Predator): If Connor ever encountered this shapeshifting monster, it most likely happened during his childhood. Cue the younger Connor having a humorous interaction with the Treehouse Predator after it ate him and then changed its appearance accordingly.
- SCP-990 (Dream Man): He did cameo in the "In the Pines" music video, but it would still be very cool if he appeared in the series proper, showing up in Connor's dreams to give him an ominous warning about the future. Or since he's supposed to haunt the dreams of Foundation personnel rather than SCPs per se, maybe he would visit Natalie's dreams instead?
- SCP-993 (Bobble the Clown): Seeing as Bobble doesn't usually go after adults, it's possible that this one will be involved in a flashback to when Connor was a kid. And it'll be terrifying.
- SCP-999 (The Tickle Monster): Either as a light-hearted Breather Episode, or at least a quick cameo.
- SCP-1000 (Bigfoot): They did cameo in the "In the Pines" music video, and Natalie did mention having a dream which strongly alluded to this SCP. Perhaps Natalie knows more about them than she initially realized...
- SCP-1128 (Aquatic Horror): Probably for an opening gag. Bonus points if we never see the monster itself, just bits and pieces of it.
- SCP-1440 (The Old Man from Nowhere): As Connor could easily empathize with and relate to this guy's struggle with immortality. Not surprisingly, their extended contact with each other would result in Connor getting killed at least once by the Old Man's deadly curse.
- SCP-1529 (King of the Mountain) and/or SCP-5140 (EVEREST): An episode set on Mt. Everest would be interesting, from the picturesque Himalayan scenery, to Connor getting frozen to death by either (or both) of these two alpine anomalies.
- SCP-1867 (A Gentleman): As Lord Blackwood could obviously share another one of his crazy personal anecdotes with Connor.
- SCP-2337 (Dr. Spanko): Because a talking bird that speaks in crazy nonsense is the perfect kind of obscure, offbeat SCP to appear in this series. There just needs to be a voice actor who can imitate Spanko's speech well enough...
- SCP-2416 (The Day the Clown Died): Connor's reaction to meeting Joe will probably be something like "This guy's just like me! Except he doesn't stay in the same place when he dies, and... he's really fucking stupid."
- SCP-2521 (●●|●●●●●|●●|●): While 2521 has already made a cameo in "Only Us", perhaps we may later see a brief flashback depicting Connor's encounter with 2521, from his abduction to how he was able to escape from it.
- SCP-2935 (O, Death): Though given the apocalyptic nature of this SCP, by necessity it can only take place in the alternate timeline/universe that was described in its story. It would be quite creepy and eerie to see a permanently-dead Connor lying right next to a bunch of other people's lifeless bodies.
- SCP-3008 (A Perfectly Normal, Regular Old IKEA): Because it would be very interesting.
- Infinite IKEA confirmed, in a two-parter where Connor is trapped inside.
- SCP-4666 (The Yule Man): Perhaps he could be the antagonist of a longer, darker Christmas Episode.
- SCP-4885 (Find Him): Connor will be forced to help out with recontainment efforts after the location of "Waldo" has been leaked somehow. Cue Connor's body being gruesomely torn to shreds as Waldo teleports out of it, only for the monster to be confused when his victim reappears alive and well (but still knowing where Waldo is).
- SCP-5000 (Why?): Though given the apocalyptic nature of the events described in this SCP's story, by necessity it can only take place in the alternate timeline/universe that was described in it.
And of course, any one of the many different Little Misters. If Dr. Fish, who's basically SCP-527 (Mr. Fish) has shown up, then maybe more of his brethren will soon follow him.
- SCP-913 (Mr. Hungry): Connor encounters this guy at just the wrong time when he has another one of his hunger spells, and thus he (unsurprisingly) ends up getting devoured alive by Mr. Hungry.
- SCP-1799 (Mr. Laugh): Obviously, he would cause Connor to die of laughter (just like Kenny in that one South Park episode).
- SCP-2396 (Ms. Sweetie): Connor somehow gets tricked into eating a piece of SCP-2396-A candy, and then gets transformed into an SCP-2396-B candy monster, much to his dismay.
BONUS: How about some Joke SCPs too? If SCP-420-J (The Best ████ in the World) exists in the Confinement universe, then maybe other -J's do too.
- SCP-____-J (Procrastinati): This thing would be used as an excuse by someone to get away with being lazy and slacking off.
- SCP-106-J (The Barbecue Man): There can be a Bait-and-Switch joke in which we're led to believe that the actual SCP-106 (The Old Man) is chasing Connor... then it cuts to a scene of the BBQ Man serving up a hamburger or hot dog for Connor in the cookout dimension.
- SCP-666½-J (The Roaring Flames of Hell): Just in case Lord Bung ever feels like resorting to Toilet Humor, then they can use this thing to set up the joke.
- Ambrose Restaurants: They're one of the more obscure GOIs, but there could be something potentially funny about Connor visiting one of their restaurants and eating their weird food.
- Are We Cool Yet?: They'll most likely be portrayed as a bunch of comically pretentious hipster artists.
- Chaos Insurgency: These guys would definitely find Connor to be a useful anomaly like the Foundation does, and so they'll try to abduct him for their own objectives.
- It would also be unsurprising if Dr. Wilson was secretly working for them, given his open disdain for the Foundation bureaucracy (not to mention that one incident where he killed a security guard during the Soulsberg uprising, which is mighty suspicious).
- Chicago Spirit: Another one of the more obscure GOIs, but anomalous organized crime does sound pretty interesting.
- Dr. Wondertainment: See the section in the above WMG about the Little Mister SCPs.
- Global Occult Coalition: The GOC's infamous reputation for being trigger-happy maniacs towards anomalies will be played for laughs, as they try to shoot and blow up Connor many times.
- Marshall, Carter and Dark: Connor could be part of a mission to infiltrate one of their auctions, likely by being "offered" as another one of the anomalies for sale.
- Serpent's Hand: With their goal of liberating anomalous beings from oppression by the GOC and SCPF, they may even offer to break Connor out of Foundation custody, which should be a tempting prospect for sure. Also, the Wanderer's Library could make an interesting setting for a future episode.
- Shark Punching Center: Obviously, these guys would exist primarily to be used for jokes. They might even appear as soon as Episode 8, given the presence of this shark-faced humanoid whom they would surely want to punch.
- Unusual Incidents Unit: If they were to ever show up in this series, expect their in-universe representatives to be parodic expies of Agent Mulder and Agent Scully from The X-Files.
Also, any of the following religious cult GOIs. For humor purposes, they'll be depicted as satirical parodies of real-life cults; for narrative purposes, they may possibly be somehow connected to the "Cult of Vulkan" which worships the demon inside Connor.
- Children of the Scarlet King: Even if Connor's demon isn't actually the Scarlet King himself, maybe they're at least related or know each other?
- Church of the Broken God
- Church of the Second Hytoth
- Fifthist Church
- Sarkic Cults
So they'll place him into an MTF unit that's an expy of Omega-7 ("Pandora's Box") or Alpha-9 ("Last Hope"). Bonus points if familiar members such as Able and Iris, along with other well-known (or much more obscure) SCPs are also involved in this project.
And even if the series ended with Connor somehow managing to escape indefinitely, it would likely be rather bittersweet; given the fact that Connor has no money, resources, social connections, or even any legal documents which would publicly confirm his existence to the outside world; the price he pays for freedom would likely mean being a lonely, paranoid, homeless fugitive trying his best to avoid being discovered and recaptured by the Foundation. Though his loneliness might be mitigated if he has someone like Natalie to live with, and perhaps he may find a safe refuge (anomalous or otherwise) which will keep him out of the Foundation's grasp.
- It's also possible his file is hidden under another number in the database in order to throw off suspicion (like it is with SCP-184).
- First of all, maybe Connor's dream from Episode 4 is about SCP-231-7. A singing priest? A distressed-sounding child? The sound of flesh being cleaved, presumably by said priest? Who does that remind you of?
- Well, Episode 7 reveals that Connor's dream is a flashback involving a man named Ragneer, implied to be a predecessor of sorts to Connor. Though we do see a priest and a (sacrificed) child, the kid doesn't look or act anything like SCP-231-7 at all (especially as they seem to be a boy rather than a girl).
- Alternatively, Connor has some sort of (loose) connection to SCP-231-7 and her predecessors. Remember when they said that putting 231-7 out of her misery "was not an option"? What if that's because they physically can't put her out of her misery? Perhaps Connor was subjected to something similar to the 231s, possibly by the same cult that impregnated them.
- Probably jossed. SCP-2200-1 states that it was created to protect humanity from the Devil, with the implication that it tries to save any human souls from suffering damnation in Hell. Though of course, there's never been a consistent explanation for how exactly the afterlife works in the SCP universe, and it may differ between individuals. As far as we can tell though, the "dark void" seems to be a transitional place where souls taken by the sword visit before they get dropped off in Soulsberg.
- Episode 7 implies that Connor might just be the latest individual who has held these dark powers. Maybe this could imply that there is some way for Connor to die permanently (through natural causes or otherwise), or at least lose his immortality and pass it on to someone else?
- There is an SCP with a similar power: SCP-181, a former D-class who siphons luck from others. There's also another SCP with a cursed form of immortality: SCP-1440, a centuries-old man who is unable to die, while other people around him do get killed in disastrous ways.
- Alternatively, killing Connor over and over again is a vital part of his Special Containment Procedures, not because it's guaranteed to completely eliminate him for good, but simply to try and prevent the demon that's possessing him from ever getting any chance of successfully breaking free to destroy the world.
- Not likely, as one major rule that the Foundation consistently enforces is avoiding any overly-close fraternization between their employees and SCPs; especially if it turns into a romantic/sexual relationship, as this would inevitably compromise their loyalty to the Foundation's interests of keeping those SCPs locked up.
- At the very least, Natalie will be given amnestics (due to prying too closely about Connor's file) and/or forced to leave her position as Connor's therapist (as the O5 Council had voted to defund the SCP mental health program). Connor will be depressed, but he probably won't transform into a monster (yet).
Though of course, that would just be anticlimactic, so Natalie's boss (the manager of Site 95) will discover this anyways, and have her detained by security personnel at a secret Foundation hospital. They might even force her to carry the baby to term, due to the possibility that they might inherit Connor's anomalous powers or otherwise affect his containment procedures somehow. And to aid this coverup, they'll try to have both Natalie and Connor amnesticized to forget about each other's existence. But Connor will still learn exactly what happened to Natalie anyways, and he certainly won't be pleased...
- It's also possible that Natalie isn't pregnant; and the reason why she's been skipping those health checkups, is because she's experiencing a nervous breakdown during her ongoing quest to uncover the Foundation's secret files on Connor, especially feeling anxiety over how they'll react to her prying too deeply into this matter.
- Even if Natalie isn't pregnant yet, she might be in a future episode, at which point she goes through similar ordeals as described above. Also see the theory below this one about Connor's anomalous influence rubbing off on Natalie (and Stethoscope).
Unless there was something much more sinister about this SCP that wasn't shown, it hardly seems that a bunch of living, animated cookies are worth wasting bullets on, when they can just be observed and studied For Science! instead. Perhaps these Foundation soldiers were in fact secret double agents employed by the GOC, tasked with terminating "parathreats" before the Foundation can capture them.
- The episode will reveal that Connor's Resurrective Immortality comes with a previously-unknown side effect; every single time Connor dies and then spawns a new body from thin air, it's not just making new bodies for him, but each of them come with new souls/minds/consciousnesses, with all the memories and personality traits of the previous Connors, but is actually separate from them. The spirits of all these dead Connors end up in some sort of afterlife dimension, where they (indefinitely) spend the rest of eternity with only each other for company. And this may lead to existential angst for many of them, considering that none of them will live Happily Ever After with Natalie (cue many of them settling for each other to cope with this).
- Or the Connor clones were all created by SCP-049 (the Plague Doctor), who has already been confirmed to appear in this episode. The teasers have shown 049 performing surgery on at least one dead Connor, and even seems to have created a creature made from several body parts stitched together. Perhaps the episode will reveal that (for reasons unknown) the Foundation is allowing the Plague Doctor to experiment with the huge supply of Connor corpses that have been overfilling the Site 95 morgue. The Doctor eventually figures out some sort of necromancy that brings each of these dead Connors back to life, not as the usual mindless zombies he normally creates, but as fully sapient beings (either undead or even revived to full life). As the city of Connors looks like it's located underground, maybe it's connected to the basement of Site 95?