Player

is a Character type in. As the name indicates, player refers to whatever actual real-life human is playing the game with that given Character at the moment in question. This could be used to describe a player in any of the available Game Modes: either Singleplayer or Multiplayer (Co-Op, Internet, LAN).

Players can be one of the built-in characters or a Custom Character. Simple, right? UGH!!! go to a DIFFERENT PART OF THE WIKI, NOT THIS.