Amnesiac characters, gacha games in particular LOVE their amnesiac characters.
Specially bad when your character doesn't remember who they are, turns out they're the legendary hero/special forces dude/whatever badass title the game gives you, but everyone still treats you as a glorified errand boy because you don't actually remember anything, even after being told who you are.
"Ok, so you were leader of the Holy Order of Whatever, cool, anyway I need you to go on some menial quest for me, you can't refuse because... Reasons..."