Riku: You were just the delivery boy. Sorry, your part's over now.
Being The Chosen One often comes with a lot of perks. Combo Platter Powers, Light 'em Up, maybe even the power to control fate itself. Not only that, but there's also the status that comes with being The Chosen One; connections in high places, maybe even attaining royalty. With all this going for them, who wouldn't want to be The Chosen One?
That's exactly what this character thinks, and they're damned determined to find out first hand... Even if it means stealing the status and all that comes with it for their own.
How they go about it can happen in many ways. Maybe they used some dark magic ritual to unbind whatever gives the chosen one their status and bind it to their own. Maybe they pulled a Grand Theft Me or a "Freaky Friday" Flip with the chosen one. Maybe they did something to themselves to convince The Chooser of The One that they're more worthy than the current chosen one. Or maybe they managed to beat the chosen one in combat and took the title that way.
And on the non-power stealing end, sometimes, they may have managed to convince most of the world they're the true chosen one and discredited the real chosen one in some way. In a few cases, someone may think this character "stole" the chosen one's position from someone else they deem more fitting for the job; they may be right or wrong.
In any case, expect the previously chosen one to go through a lot in order to regain their status or, in some cases, prove being chosen wasn't what made them a hero.
Depending on the circumstances, this can be used to humble a chosen one whose status has gone to their head a bit too much, forcing them to go on a personal journey of development in order to regain their status. In rarer cases, it can be The Hero who takes away chosen status from a less than worthy chosen one.
See, obviously, The Chosen One. When the chosen one keeps trying after losing their status, they can end up pulling a Screw Destiny and become The Unchosen One. The Chooser of The One is often common to this trope, but not always. Compare The Chosen Wannabe, who simply covets the role without taking themselves.
For someone who can literally hijack destiny and fate, see Winds of Destiny, Change.
Naturally, given the nature of this trope, expect spoilers below.
- My Hero Academia: Sir Nighteye accuses Midoriya of being this, as All Might picked him instead of Mirio, a more experienced and powerful candidate who Nighteye had been grooming to succeed All Might as the Symbol of Peace. Following Overhaul's defeat and Mirio sacrificing his Quirk to protect Eri, Midoriya is inclined to agree and tries to give One For All to Mirio as Nighteye wanted, but Mirio flatly refuses.
- Robyn Hood: I Love New York: Robyn has her status as the prophesied "Child of Darkness" stolen by another archer, thanks to a ritual and a drop of our heroine's blood. Normally, this would be a relieve for Robyn, since then she would avoid getting constantly harassed by members of the Dark Horde that want her to turn to evil, and bring their organization to a complete dominion of the Five Realms. That, and get rid of all the guilt that knowledge brings to her. The problem is, the woman that has done this is definetly evil, is totally on board with making said prophecy true, and has a personal vendetta against Robyn. Planning to harm many of her loved ones along the way. She manages to beat the pretender by the end of the story, but is left unclear if the ritual has been undone.
- In Amazing Fantasy, the nature of One For All's successor is inverted from canon. Izuku doesn't meet All Might in that underpass as he's hospitalized from the spider bite. This gives Sir Nighteye enough time to pressure All Might into making Mirio his successor. However, Izuku and All Might end up meeting anyways during the Prowler incident. The Hero laments that he would have loved to make Izuku the next torchbearer had he not already given One For All. By the time Izuku arrives at school, All Might shows some clear favoritism towards him even though he's not his protégé.
- House of Anubis: In the third season, there's a plot to awaken the sleeping Robert Frobisher-Smythe, involving roles passed down through the generations, awaiting the fated eclipse. Robert's "Keeper", Harriet Denby, had her role (and identity) forcibly stolen by her adopted sister, Caroline, who wanted the glory of being involved in the ceremony. Because of this, and Caroline's general impure nature, Frobisher-Smythe woke up evil.
- Star Trek: Deep Space Nine: Captain Sisko has become the Emissary of the Prophets, somewhat reluctantly. In the episode "Accession", a Bajoran poet from 200 years ago named Akorem Laan comes through the wormhole and claims to be Emissary, not entirely against Sisko's wishes. Sisko begins to regret giving up the title when Akorem institutes policies that go against Federation standards.
- Genesis: Jacob manages, with the help of his mother Rebecca, to take his father Isaac's blessing instead of Esau, who had to receive it as the older brother. He later had to flee his wrath.
- Baldur's Gate II: The entire plot revolves around an ancient wizard named Jon Irenicus trying to hijack your Player Character's destiny as one of mortal children of Bhaal to succeed your father as the next God of Murder. Notably, Irenicus cares very little about the Bhaalspawn free-for-all, but needs Bhaal's power to exact his personal agenda, and actually succeeds in stealing the divine part of your soul (and, with it, your birthright) half-way through the game (though you take it back from him in the finale).
- Dragon Quest XI: The Hero ends up having their Luminary powers stolen by Mordegon. In a case of Gameplay And Story Intergration, the luminary branch of their skill tree ends up locked off until they can end up getting it back.
- Kingdom Hearts I: Riku briefly manages to steal the Keyblade away from Sora once he lands in Hollow Bastion. This is actually a subversion because Riku really was the Keyblade'snote original wielder, but his heart ended up falling to darkness and Sora became the next worthy one by virtue of being the one closest to him. In essence, it's Sora who ultimately pulled this trope.
- Xenoblade: Dunban presents a subversion. Although he is the first one to wield the Monado, he wasn't The Chosen One and was managing to force its use through sheer Heroic Willpower. Once the true chosen one (Shulk) shows he can use it much more fluently, Dunban is fine with him wielding it from then on. After being killed, Shulk ends up having the Monado stolen from him by one of the deity figures of the game, Zanza, who plans on resetting the universe upon obtaining both Monados. In this case, The Chooser of The One was merely using The Chosen One to his own end. Upon being revived, Shulk manages to pull a Screw Destiny by finding his own Monado and taking out Zanza once and for all.
- RWBY: Cinder Fall used a Power Parasite Grimm to steal part of Amber's Fall Maiden powers. While Cinder was mostly just after the power, the Maidens have a key role in the fight against the Big Bad Salem. Since Cinder is working for Salem, this lets Salem undermine the efforts against her. Pyrrha Nikos was supposed to get the rest of Amber's power, but Cinder brutally murdered her to claim it for herself, then killed Pyrrha. Cinder even had the gall to claim that the power was hers by right the entire time, and Pyrrha was promised something that was never hers.
- Kung Fu Panda: Legends of Awesomeness: Subverted. In "Challenge Day" Master Shifu tells everyone in town that today is 'Challenge Day' when anybody who can beat the Dragon Warrior before sundown can assume the title. Po spends most of the day fending off challengers until he finally loses to Hundun after sheer exhaustion from spending most of the day doing nothing but fighting, losing his title to Hundun. It's subverted in that there is no such thing as a 'challenger day'; it was something Shifu made up in order to try and humble Po and make him realize not to take his title for granted. Unfortunately, losing his title ends up putting Po into a 10-Minute Retirement over being depressed about it and Hundun, upon realizing it wasn't real, proceeds to lock Shifu up and start to abuse his fake title around town. Po eventually realizes that protecting the town is far more important than a title, and proceeds to deal payback to Hundun for the sake of the town.
- Legend of Korra: Unalaq manages to do this indirectly by virtue of merging with the Evil Counterpart spirit of the spirit that empowers the Avatar and killing said spirit in question, thus Depowering the Avatar.