When K.O. finds moments of his life slipping by, he begins to suspect a villain or new evil force is behind it.
Tropes:
- Ascended Fanboy: Dendy loved collecting Pow Cards growing up, and in her adulthood, became the CEO of Pow Card Industries.
- Back for the Finale: Many of the briefly shown adventures involve characters not seen recently:
- K.O. is shown to again meet Garnet (with the appearance she gained in "Change Your Mind"), Captain Planet and the reunited Planeteers, and Strike.
- Other characters from the show show up prominently, including Wally The White, Small Calf Demon, the Hue Troops, and the P.O.I.N.T. crew. Many make speaking roles for the first time in long while.
- Bait-and-Switch: One of the future moments is called "Carol's Big Surprise", and has K.O. running into a hospital room where Carol and Mr. Gar are holding a small bundle...which turns out to be a plate of pancakes, as the whole thing is a 'surprise' breakfast.
- Bittersweet Ending: As K.O. admits, he got older before he knew it, and his friends eventually left the Bodega to do other things. Despite this, K.O., Rad, Enid, and Dendy remained friends throughout their adulthood (with the last possibly romantically involved with K.O.), and K.O. ultimately achieved his dream of being a great hero.
- Book Ends:
- At the end of the series premiere, "Let's Be Heroes", Mr. Gar launched himself from the sky to defeat Darrell. At the end of the series finale, K.O. (now older) has become a level 100 hero and owns Gar's Bodega. He launches himself from the sky to take down a futuristic Darrell-like robot named Robbie.
- "Thank you for watching the show."
- Breaking the Fourth Wall:
- K.O. runs into promotional posters for many previous episodes.
- At the end of the episode, K.O. says "Thank you for watching the show" to the viewer,
- Call-Back: The final scene of the series features adult K.O. making the same Dynamic Entry Gar did at the beginning of the series.
- The Cameo: Zak Saturday and Sunny Bridges appear during one of K.O.’s adventures, delegates from the two shows missing from “Crossover Nexus”. Even more surprisingly, the same scene shows Randall P. McDuff, the main character from the failed pilot Party Wagon.
- As a Blink-and-You'll-Miss-It example, a shot of the Future Bodega being attacked has Brick Frog running offscreen, a nod to Ian JQ's first animation job.
- Canon Immigrant:
- Lord Boxmax, Boxman's Final Boss form from the OK K.O.! Lakewood Plaza Turbo mobile game, shows up as one of Boxman's various forms in this episode.
- Robbie and Sara, the new Boxmore robots that attack the plaza at the end, are also from the same mobile game.
- Canon Welding: Mr. Gar's childhood town is revealed to be Monte Macabre.
- Creator Cameo: The older Rad's appearance during K.O.'s 35+th Birthday party is oddly similar to show creator Ian Jones-Quartey, who voices Rad.
- Dénouement Episode: The previous episode concluded the Myth Arc of Venomous/Shadowy Figure and T.K.O., while this one ends the series by showing what happens over many of the coming years.
- Distant Finale: After the climax, the scene starts rapidly advancing in time until K.O. is over 35, with many of the vignettes acting as a "Where Are They Now?" Epilogue.
- End-of-Series Awareness: K.O.'s experience reflects going through your childhood before you know it, as well as a show ending.
- Episode Title Card: This episode uses them constantly within the episode itself, as a way of showing all the snippets of future adventures in the form of theoretical later episodes (some of which were planned to be actual episodes before the last season was cut in half).
- Everyone Laughs Ending: The credits show footage of somewhere within the Cartoon Network building, with no end credits song, with unclear mumbling in the distance that turns to laughter as the credits near the end.
- Faking the Dead: One episode shows Gladys and Gertie mourning at Ginger's grave. But as soon as they leave, the tombstone turns around...Ginger: Double cross!
- Finale Credits: A still frame of a door in an empty room at the show's offices is shown. You can hear faint sounds of an air conditioner with people speaking and laughing, which is presumably from a wrap party for the show. The credits themselves are colored white.
- Future Badass: Unsurprisingly, K.O. becomes incredibly strong in the future. However, as one of his employees notes, he is Level 100.
- Gamer Chick: Fink is shown to be a major league professional gamer in the future.
- Happily Married: Heavily implied with Boxman and Venomous, who are wearing matching rings when we see them in the future. Also Carol & Gar, Potato & Colewort, and Nick & Joff got married.
- Killed Off for Real: Skateboard Nerd's grave is shown next to Ginger's (who subverts this trope).
- Leaning on the Fourth Wall: As K.O. is upset and confused about time passing so quickly, he says, "It's not fair! We were supposed to go on more adventures!" while rushing past the promotional posters of all the previous episodes. It's a bit of a meta-note about how the series was cancelled unexpectedly, and despite the crew being able to finish the series with this planned ending, they still had to cut things short and didn't get to tell all the stories they wanted to.
- Long Hair Is Feminine: Dendy is shown to grow out her hair in the future.
- Maybe Ever After:
- Dendy and K.O. are still close friends decades into the future, but if they're romantically involved is intentionally left vague.
- Enid is shown still with Red Action years into the future, but in the further future where K.O. now runs the Bodega, the two new Bodega employees look suspiciously like Patchwork Kids of Rad and Enid, up to them also using their abilities (one being a Kick Chick with Rad's body design and skin color and the other looking like a thin male version of Enid, but with Rad's antennae and using telekinesis). The staff have been explicit that the pair are deliberately ambiguous-looking for viewers to reach their own conclusions of whether Rad and Enid had kids or if the two workers are just random doppelgangers who coincidentally look like Rad and Enid.
- Mythology Gag: One of Boxman's various alternate forms is Lord Boxmax, from the OK K.O.! Lakewood Plaza Turbo mobile game.
- Sequel Episode: Sequels to numerous episodes appear here but are incredibly brief, generally as a punchline or just to show what happened to these characters.
- Serial Escalation: Played for Laughs. Five episodes that followed each feature saving the Plaza (again), saving the planet (with Captain Planet and the Planeteers), saving the Multiverse (with Garnet), saving the Fourth Dimension (with Holo-Jane), and saving all of time and space (with the Hue Troop).
- She's All Grown Up: Fink and Dendy are both shown to grow up into very attractive young women.
- Shout-Out:
- As Enid goes to "witch college", she wears the uniform of Luna Nova from Little Witch Academia and even a witch broom with the same design as the ones from the anime.
- Lord Boxman goes through several different forms, one of them making him resemble Dr. Eggman (including rings floating around him to their iconic chime), referencing K.O.'s past team-up with Sonic & Tails.
- "Don't cry because it's over, smile because it's over".
- Through the Eyes of Madness: From the audience's view, it seems K.O. is experiencing Mental Time Travel in extreme fast-forward, causing him to miss his entire life. In truth, nothing is wrong physically—he's just losing track of time in a mundane sense, which is made worse by K.O. trying to solve his problem by pushing ahead harder instead of enjoying the time he has.
- Time-Passes Montage: The entire episode is shown as snippets of future adventures that go all the way into K.O.'s adulthood.
- Vignette Episode: The episode is made of snippets of theoretical later episodes, most of them bizarrely out-of-context.
- Wedding Finale: For the final episode of the series, we see the weddings of Carol and Gar, Nick and Joff, and Potato and Colewort (even though the last pair are too young to get married).
- "Where Are They Now?" Epilogue: The episode reveals the fates of numerous characters:
- Enid returns from witching school and becomes a dojo teacher with Red Action (who is now her partner, professionally and romantically).
- Rad returns to Earth a decorated interstellar war hero and starts his own business: a cat café called "Don't Talk To Me Til I've Had My Coffee (And Petted A Cat)".
- Carol and Mr. Gar get married. Mr. Gar later travels to Mexico (or a country implied to be like it in architecture and culture) to pay homage to his deceased grandmother, who also ran a bodega.
- Lord Boxman retires from villainy and leaves the BoxMore factory to Mikayla, Jethro, and Ernesto.
- Boxman's other robot children leave to go live their lives: Darrell has his own farm, Shannon has her own talk show, and Raymond has his own band.
- A Real Magic Skeleton becomes the new owner of iFrame Outlet. Brandon continues to work with him.
- Big Bull Demon and Small Calf Demon become lounge singers.
- Billiam Milliam and his henchmen buy the moon, but Cosma eats it (including Billiam Milliam and his men) and flies away.
- Big Teeth grows up and is still friendly.
- Joe Cuppa still performs his lame, coffee-based stand-up comedy, only this time, he gets hit with a burning mallet when he performs on Shannon's show.
- Beardo reunites with his brother, Weirdo, and continue being food truck cooks.
- A demonic Squeezo now appears if someone says "Don't squeeze, don't squeeze, don't squeeze the Squeezo" in the mirror.
- Professor Venomous reunites with Lord Boxman and they marry each other (judging by the rings they have on their fingers when Boxman gets his hair cut by Logic Man and Professor Venomous is in the audience when Fink wins the Videos Game Tournament).
- Boxman reconciles with Logic Man and gets his hair cut from him again.
- Mr. Cardsley is now being tortured in the afterlife (implied to be Hell) by Spanky and Crudde.
- The remaining members of P.O.I.N.T. retire from the Academy and enjoy a relaxing day at the beach.
- Combo Breaker successfully applies to P.O.I.N.T. Prep, which is now run by Biki, Elodie, and Purrcival.
- Pird eventually has his own family.
- Chameleon Jr. becomes less of a spoiled brat and promotes a vaguely-religious youth program called "Corn Again". Despite others not wanting to join, he still keeps the faith.
- Fink becomes a professional videos game player, defeating her latest challenger and winning a big cash prize with adoring fans (and Professor Venomous) cheering her on in the crowd.
- Ginger continues to trick people (this time, she tricked Gertie and Gladys into thinking she died).
- Dendy graduates as valedictorian in her class and becomes the new C.E.O. of Pow Card Industries.
- K.O. grows up and succeeds Mr. Gar as the new boss of Gar's Bodega and becomes a Level 100 Hero. He still regularly defends the Plaza from Boxmore's robots. His new employees bear a strong resemblance to Enid and Rad.
- Wham Shot: Basically the entire "One Last 'Sode" segment, but especially the ending:Tall Teen: (commenting on KO’s Dynamic Entry) Mister KO is pretty strong, but how did he even get up there?Short Teen: He's level 100, dude? C'mon.
