Gak was taken on after following the Slime Brothers to Evil Harry's "Dungeon of Fear - rooms to let" and was given the task of goading Dat's Me, the resident Troll in to action. However Gak appears to be the only member of Evil Harry's team that is uniquely unsuited to that task. Having no tongue prevents Gak from issuing any instructions and more often than not, they both just stand there looking stupid.