Despit being descriped as the protector of earth, this still does not mean he can't be a threath. Once a kajiu or a monster just as tall as a kajiu, attacks or awakens Gamma he's going to be extremly pissed & he will do anything to destroy this monster. (Unless it's a ally/friend to Gamma or if this monster awoke Gamma for other reason then killing or fighting him)
Gamma mostly attacks monsters that: Are trying to kill it, hunt & attack it. Gamma will also attack if this monster is a rival species to Gamma or if it sees this monster as a threath to it's territory.
