Chuubi

A yeti, also known as "The Batman of Yetis" (according to his resume), whose family died in a tragic and extremely sad forrest fire, who accompanied Abacus on the quest to the Dark Tower, who seemed to have died whilst carried away by a wizard cult, but Abacus promised not to play with his cool toys, so fair enough, but then Abacus realised that he was partying with the other yetis at the cult party which was really a disco, but then the leader of the cult/disco turned out to be using illusory magic and sent Abacus into darkness. Presumably they are both dead.