He's a former human who Lilli helped realize his true self, which happened to be a very very hungry deathclaw who loves to be collared. the initial deathclaw tf happened and with some help from lilli and sharky he quickly fattened up, never saying no to more food and eager to grow, especially with the amount of praise he got for eating so much. never underestimate the power of gettin called 'good boy'..........