Personality. At early-first, jack acts friendly towards the player, encouraging them to continue by giving them a cookie. However, he gets frustrated or insane upon the player getting a white rings (blue rings) ,problem wrong, showing a very more menacing/violent/psychopath side to his personality. However So, jack, in this trapped game, is a video game character jester guy having an existential crisis or going insane and wants to escape the game he's in. Well, that's what i think anyways.