Say you want to play a TTRPG where there is zero concern for the PCs to be of equal power level. Maybe a superhero game with Superman and Batman in it, or The Doctor and companions, or Gandalf and the Fellowship.
So, given that premise, somebody (or multiple somebodies) gets to play a much more powerful character than other players are playing.
What mechanics can make that work?
Mechanics which grant the player stuff which isn't intrinsic to the character itself are one approach used by some games. A metacurrency like story points, fate points, whatever the game calls them. That can give the player agency and power without making the character more powerful. So Superman is directly powerful, but Batman has lots of metacurrency to affect the game.
What other methods are there to achieve this goal?
So, given that premise, somebody (or multiple somebodies) gets to play a much more powerful character than other players are playing.
What mechanics can make that work?
Mechanics which grant the player stuff which isn't intrinsic to the character itself are one approach used by some games. A metacurrency like story points, fate points, whatever the game calls them. That can give the player agency and power without making the character more powerful. So Superman is directly powerful, but Batman has lots of metacurrency to affect the game.
What other methods are there to achieve this goal?