Self Fulfilling Prophecy / Webcomics

• Better Days: Sam’s wife gets paranoid about the possibility of him cheating on her, so she starts treating him like crap. Her petty and mean-spirited attitude eventually pushes him to actually start an affair with Sheila.
• Divine Bells: It's said that men with Divine Powers are a bad omen and will spell certain ruin for the country, because they lust for power and are brutal in executions, using their Divine Power for personal gain. After Bake-Yeom had to suffer through being badmouthed like this for years because of his own Divine Powers, he decided that he might as well do as they say and become brutal, using his powers as brute force to obtain more power if necessary.
• In Erfworld, Parson is Fated to defeat the Big Bad, Charlie. Until the events of Book 2 however, he was content to manage a city and study tactics with Jack and Sizemore. But in his efforts to stall the prophecy, Charlie sabotages Gobwin Knob, causing them severe losses and putting Parson back in charge of the war effort. Eventually, Charlie reveals his hand to Parson and makes things personal, ensuring that Parson will go after him.
• In Far Star Summer School, Falguni implies something along the lines of this trope, when she warns Constanza that the more Constanza tries to subvert the course of destiny, the more forcefully it will seek to prove her efforts to be futile.
• Girl Genius:
  • Baron Wulfenbach believes that Agatha is dangerous, and takes steps to neutralize her even though he knows that she hasn't actually done anything wrong yet. This makes his empire vulnerable both to Agatha, lone Sparks, Stormlords, and the Other. He ends up affected by a one-of-a-kind mind control device, loses the peace he so desperately fought to maintain, and eventually freezes himself in a timestop in Mechanicsburg with Agatha and most of the other dangerous players so that his son can clean up the mess he created. Unfortunately, this plan failed to contain the most dangerous of his enemies, but luckily Agatha managed to escape and helps save the world again.
  • A bit more of a literal one regarding the Storm King. Several hundred years ago, there was a prophecy that Europa would never see peace until the Storm King and the Heterodyne Girl were wed. The First Storm King ruined his kingdom searching for his lost bride, and the continent descended into chaos again. All that was left were the Knights of Jove, the Storm King's honor guard, who kept an eye on the royal line and talked about the "good old days." Then, when Klaus Wulfenbach put an end to the Long War for the first time in centuries, the Knights refused to acknowledge him and did everything they could to undermine him in favor of their chosen new Storm King.
• Jade of Homestuck has some semi-precognitive abilities, and ends up creating one of these. She sees a vision of Dream!John crying in the future— then, presumably, being confronted by Jack Noir. So she prepares a birthday present — a collection of high-level weapons — to protect him against Jack. Said gift falls into Jack's hands first, who uses it to launch his rise to power, causing the scene which prompted her to send the present in the first place.
• The Order of the Stick:
  • Durkon has one of these in his background. He's going to cause bad things to happen when next he returns to the dwarven kingdoms, so his boss (High Priest Hurak) send him away without telling him why, and tell him never to return. But he would never have really been able to return if he hadn't left. (Handwaved when Hurak pointed out the possibility of him buying groceries or somesuch -Hurak seems to have believed any variety of "returning home" was risky.) The kobold Oracle has prophesized that he WILL return home... albeit posthumously. This begins to make sense after Durkon becomes vampirized by the Linear Guild, foreshadowing the first prophecy to come true. Notably, Hurak's successor, High Priestess Rubyrock, actually rescinded Durkon's exile, as Hurak took the prophecy to his grave with him. However, the letter telling Durkon as such was eaten by the Monster in the Darkness when Team Evil attacked the Azure City Outpost where Miko Miyazaki was resting for a night.
    • The dwarven clerics lampshade this:
    Dwarven cleric 1: 'Tis risky business screwing with prophecy.
    Dwarven cleric 2: Aye, don't I know it.
    • It later came to a head. The vampirized Durkon is the servant of Hel, who, by having Durkon attend the Godsmoot, where the Gods debate whether to destroy the world to stop the Snarl, plans to have the world destroyed. This will doom every dwarf to her domain, since according to the dwarven faith, all who die dishonourable deaths belong to Hel, and dying in the apocalypse carries no honour. Not only did kicking him out of his home mean that Durkon went adventuring, joined the Order and became a vampire, but, according to the evil but free will-possessing vampire spirit controlling his body, the resentment he still carries against the dwarfs for exiling him means that the spirit, who was tailor-made for Durkon's soul, was willing to go along with the plan, while another spirit in another dwarf may not have.
    • The characters actually discuss this, wondering why Odin even gave his priest the prophecy, since it wouldn't have happened otherwise. They conclude that Odin foresaw Durkon needed to be part of the Order, which wouldn't have happened unless he was exiled. Thor also has a theory that it was a plan to get Durkon in the perfect position to stop the Snarl. Odin himself, though, is revealed to be a bit touched in the head and doesn't remember planning any of that, so it's anyone's guess whether he knew what he was doing.
  • Belkar kills the Oracle because the Oracle earlier told Belkar that he would kill someone from a short list of subjects (including the Oracle himself), and Belkar didn't actually get to kill any of them yet. The Oracle then tries to weasel out of the prophecy with a bunch of pretty lame Prophecy Twist ideas, all of which were lifted from the Epileptic Trees in the comic's forum. The actual answer was that Belkar would cause the death of any in that list of subjects, and when the Oracle said that Belkar did cause the death of most of the people in the list, Belkar just stabbed him.
  • Another Oracle-related one (well, what do you expect, with future-prediction?): the Test of the Heart, which one must undergo to reach the Oracle (a simple health check) was instituted after someone came in for a prediction, which was that they would have a heart attack right after being told they were going to have a heart attack.
• Princess Princess (2012): When their father died and asked them to rule together, Claire locked Sadie in a tower. This was after Sadie outright admitted that she had no interest in ruling the kingdom, and that Claire was better suited to the job. However, she remains convinced that Sadie is out to take her place and continues to antagonize her, which ends up getting her turned into a pig by her own magic, meaning Sadie has to take the throne in her place after. Furthermore, Sadie overcomes her crippling lack of self-confidence in the process.
• Saturday Morning Breakfast Cereal: In one strip, the author coins the word "Exigology" to refer to a statement whose converse is its own explanation. Among the examples are a man that doesn't vote because politicians never listen to his group, and a woman that doesn't practice a new skill because she isn't good at it.
• Sluggy Freelance: In the chapter "K'Z'K", after a lot of complications, the characters manage to change the outcome of events that were going to lead to the release of the demon K'Z'K and The End of the World as We Know It — you could say it’s a Zig-Zagging Trope. However, on a smaller scale, when Riff heads to Manhattan to see that K'Z'K can't capture his mother to use as a hostage, K'Z'K sees him heading that way and guesses what he's doing — and goes there ahead of him to capture his mother.
• The Wotch: During the War Stories arc, one of the good guys betrays them to the villains under the belief that the ancient prophecies around the Big Bad Xaos were inevitable and ended up helping him out in hopes of bargaining for their safety. Theodore calls him out on this, leading to a Redemption Equals Death moment.
• Yet Another Fantasy Gamer Comic: In "Fortune Kobold", Dame Gilda the Seer predicts another kobold's death. In the next strip, he gets beheaded because he was pursuing Gilda in anger.