/dcname

description: Change your in-game nickname. usage: /dcname [name] [player] This command lets you change the [name] that appears in chat in-game. It will not affect your visible name above your head. You can change your name to be the same as someone else's, if you feel like having a bit of a larf. You can also use this command to change another [player]'s nickname, rather than your own.

Example usage: /dcname Batman BruceWayne

(will change the name of player 'BruceWayne' to 'Batman').