Not much is known about Zem's personality, however he has gotten especially cocky since learning Nen.
Chimera Ant arc
Baital orders Zem and Pokoro's units to follow his own in crane formation.
Abilities & Powers
Being a Squadron Leader, Zem is physically stronger than any average human or, presumably, Chimera Ant soldier. According to his hierarchical position, he has authority over 4-5 officers and several dozen peon soldiers. His body is considerably durable, since a punch from a Nen-using Rammot did not invalidate him.