Eezo the Varren

Eezo is a varren that was adopted by Jack. It is one of several varren that are able to wield biotics. Eezo was seen only during the Citadel DLC of Mass Effect 3 when Jack when to visit Shepard at the new apartment building. She uses a pan to play fetch with him. Eezo's name came from the abbrieviated form of Element Zero, due to it being one of several varren that were exposed to massive amounts of the substance, hence enabling them to wield biotics. Eezo, despite its aggressive nature as a varren, was more docile and became a beloved pet of Jack, almost like an alien dog. So far, only she had been able to keep it under control.