This player needs to realize that Charachters do NOT RUN THE GAME!. thats the DM's job. The DM is referee, god, goddess, judge, and every other PC and NPC.

While is is the mark of a good DM to try and bend to make all players feel needed and equally important in the game, this 'X' player sounds like he's a) never played DND before and b)dosent want to accually act his/her charachter out

You're not at fault. Your player needs to mature a bit.