As a Death Trope, expect spoilers, both marked and unmarked.
Times where somebody is Driven to Suicide in the Marvel Universe:
- Daredevil: Bullseye in Daredevil: End of Days, but not before scaring the shit out of a prostitute for good measure.
- Doctor Strange: Doctor Strange has come perilously close to this a couple of times, largely through the efforts of people like D'Spayre who attempt to defeat him by manipulating his emotions.
- Fantastic Four: Sharon Ventura, one of The Thing's love interests, attempts this twice - once after she becomes the She-Thing and again after the Thing ends up rebuffing her advances when he learned that she nearly allied herself with Dr. Doom.
- Galacta: Daughter of Galactus: When a "Tapeworm Cosmic" increases Gali's appetite to unbearable levels, she tries to kill herself with the Ultimate Nullifier.
- Actually, it was more like she was trying to give herself a very risky abortion.
- Great Lakes Avengers: Mr. Immortal begins his suicidal streak after everyone who loved him had died. But due to his powers, he can't stay dead.
- Marvel Noir: In X-Men Noir, Warren Worthington jumped off the roof of Professor Xavier's reform school after learning the truth about Jean and just how twisted she really is. The X-Men are convinced the police did him in so they'd have an excuse to arrest Xavier; the police are convinced Xavier's tutelage drove him over the edge.
- The Order: Becky Ryan was initially kept off the team because her psychiatric evaluation suggested that there was a good chance she might try to kill herself. Naturally, her first mission ends with her trying to absorb a nuclear explosion that would have taken out Los Angeles. Thankfully, she survives. Afterwards however, given that it was only her first day on the job and nobody was sure if her powers would allow her to survive a 20-kiloton explosion, Henry Hellrung wonders if she was trying to kill herself.Becky: Wouldn't all those psych tests I took have said something if I was suicidal?
Henry: Maybe they did.
Becky: ... I'm fine, Henry. - The Punisher: In the The Punisher: Welcome Back, Frank arc, Det. Martin Soap is briefly partnered with a criminal psychologist named Bud Plugg. When Soap criticizes his psych profile on the Punisher for being flowery, meaningless psychobabble, Bud hangs himself in Soap's office the next day.
- Runaways: During the initial series, after a vampire managed to seduce her and force her to fight her crush, Karolina Dean attempted suicide by offering herself up to the vampire in exchange for his sparing her friends. It failed spectacularly because her blood was loaded with solar energy, and thus the vampire was burned alive, but she didn't know that that was going to happen...
- Much later on in the series, Chase tries to offer up his life to the Gibborim to try and resurrect Gert.
- Spider-Man:
- After burying Spider-Man alive, impersonating him, and defeating an enemy Spider-Man couldn't in Kraven's Last Hunt, Kraven the Hunter kills himself because after proving himself better than Spider-Man in every way, he has defeated what is supposed to be the ultimate prey and has nothing left to hunt. Yes, that's incredibly flawed logic, especially in the Marvel Universe, but Kraven is insane.
- In The Amazing Spider-Man (1999) #19, Anne Weying, Eddie Brock's ex-wife, commits suicide out of paranoia that the Venom symbiote is coming to take over her and turn her into a monster again. Eddie blames Spider-Man, who'd unwittingly swung past Anne's apartment wearing his black suit, but it was Eddie transforming into Venom right in front of her to chase Spider-Man away that pushed her over the edge.
- During Guardian Devil, Mysterio learned he had cancer and wouldn't last long. After making Daredevil's life a living hell, Daredevil defeats him and accuses him of ripping off The Kingpin with his plan to drive Daredevil insane and repeating a "supernatural intruding upon the real world" scheme he had previously used on J. Jonah Jameson. Subsequently, Beck shoots himself in the head while claiming to steal an idea from Kraven the Hunter. What's worse? The only reason he went after Daredevil was that he didn't want to deal with the Spider-Man that was active at the time (implied to be the clone Ben Reilly).
- Star Wars (Marvel 2015): The series shows that a low tolerance for failure is not limited to just Darth Vader. On occasion, an Imperial officer who knows he has sufficiently screwed up or been badly beaten has simply shot himself rather than report his failure to Vader or the Emperor.
- Ultimate Marvel: The Vision sent a psychic broadcast around the world that was so nightmarish that it caused mass-suicides around the world. The broadcast turned out to be a recording of what the Eldritch Abomination Gah Lak Tus had done to previous worlds before coming to Earth, in hopes of warning the population.
- The Wasp: In The Unstoppable Wasp, Nadia van Dyne had to be talked down to to prevent herself from letting her first Manic episode end with her throwing herself off of her lab after she realizes she just beat the living bejeezus out of her friends and felt she didn't deserve them nor being a hero.
- X-Men:
- X-Factor (2006) begins with Rictor standing on the ledge of a building, ready to jump, because he can't cope with the loss of of powers. He actually ends up getting pushed off by a dupe of Jamie Madrox's, but gets caught before he goes splat.
- A similar situation happened to The Blob after the loss of his powers. He tried to slash his wrists, but was unable to find a vein amongst all the stretched out skin.
- Bolivar Trask was the misguided Well-Intentioned Extremist who first invented the Sentinels. The first time they malfunctioned, he had a serious Heel Realization and sacrificed himself to destroy Master Mold. (A Senseless Sacrifice, it turned out.) Sadly for the poor guy, he was resurrected by the Purifiers through use of a Technarch to be part of a team of the world's foremost mutant killers. After being given credit for the highest record of mutant kills due to his creations, 16,521,618, the regret he felt was only amplified, and he killed himself after escaping Bastion's mental control.
- X-23 habitually cuts herself on her wrists and forearms with her claws, and it's hinted that sometimes she is inflicting fatal wounds on herself when she does so. The only reason she hasn't died from them is because of her Healing Factor. Target X more blatantly indicates Laura may be prone to bouts of suicidal depression: At some point after she is forced to cut off contact with her remaining family, she seeks out Wolverine, her genetic father, fully intending to kill them both over their part in the Weapon X project because by this point she has been so broken by everything that's happened to her she feels the only way to end it is death. Logan manages to talk her down, but her continued willingness to sacrifice herself (such as when she is infected with the Legacy Virus) suggests she may still harbor suicidal tendencies.
- Mr. Sensitive of the X-Statix was Exactly What It Says on the Tin - his powers caused him constant agony that was only kept in check by his costume, which had to be redesigned every few months because his sensitivity kept growing. Plus, he was in an extremely high-stress job as the leader of one of the most image-conscious superhero teams in the Marvel Universe. Naturally, he contemplated suicide several times, and even kept a revolver, just in case.
- Young Avengers: After his episode of clinical depression at the end of Avengers: The Children's Crusade, it was fairly obvious throughout the start of Volume 2 that Wiccan wasn't 100% okay. In issue 5, however, having had Loki trick him into giving him his magic, Billy takes Loki's words to heart and decides to kill himself in order to reverse everything that he'd done thus far, his internal monologue making it clear that he has no self-esteem and an overwhelming sense of guilt. Loki has a change of heart and saves him just in time, and Billy decides to don a new hero costume and deal with the problem through other means.
- He almost tried again in issue 11, but Loki stopped him by saying he lied about this reversing everything for which Billy quite understandably punched him. Actually Loki didn't lie, but decided that Wiccan deserved a better ending, fate of the world be damned.
