: A character suddenly changes with no explanation whatsoever.
- Straight: Bob, formerly a Nice Guy, suddenly starts kicking the dog and becomes a huge Jerkass.
- Inverted: Static Character
- Bob, the resident Nice Guy, seems to have become a Jerkass. However, it turns out that it's actually Bob's identical twin brother berating everyone - Bob himself is just as nice as ever.
- Character Rerailment
- Double Subverted: However, it turns out that Bob has secret evil plans, and his kindness is merely a facade.
- Parodied: Bob constantly switches between The Hero, Big Bad, Anti-Hero, Anti-Villain and various other roles in the course of a single episode/book/game.
- Zig Zagged:
- Averted: Logical Character Development takes place in the course of the work.
- Lampshaded: "Bob isn't how he used to be, is he?"
- Invoked: "I'm going to be a changed man!"
- Exploited: ???
- Defied: ???
- Discussed: ???
- Conversed: ???
- Deconstructed: Fans who liked Bob's previous characterisation resent his changes so much that they abandon the show entirely.
- The writers decide to return Bob to his previous characterisation, thus restoring the work to its former glory.
- Alternatively, fans begin to see the merits of Bob's new personality as well, and thus start watching again.
Hi there, Pal.
Would you allow me to assist you on going back to Charact
-...*poof*...Ha! I'm not helping you at all, sucker!