funni wiki time: Four is a number and the main host of Battle for BFB. Four and his co-host X first appeared in the 2008 video "X Finds Out His Value". Four exhibits very surreal mannerisms, including being able to deform or mutilate characters, revive them, screech to stun characters, eliminate contestants by sucking them into their body (sending them to the EXIT), and shoot energy beams (called "zappies") from their hands. Four's first appearance in BFB was "Getting Teardrop to Talk", where they lead a game to win "a BFDI" (in which the winners will possibly get another Battle for Dream Island, now as "a BFB"). Four appears alongside X, another abstract being representing a real-life number, letter, or algebraic variable.