Monsters immunity to Monsters' attacks

[EvilGrins]

It's pretty much true at least among species. Krall can't kill other Krall with their staff blasts, but a Krall and a KrallElite can shoot each other to death.

Skaarj cannot kill other Skaarj with those little energy balls they fire.

Yes, Krall and Skaarj can kill each other.

It's different with the monsters that fire actual projectile weapons, this is just about the energy attacks.

What makes the monsters immune to their own energy fire?

If you were to make a new monster with an energy attack, or swap a monster's normal energy attack for something other kind of energy, how could you ensure that the new energy attack wouldn't kill other monsters of the same type?

[Rakiayn]

well for the skaarjbolts, I know it is coded in the projectile class so that the projectile passes through the skaarj.
as to your last question.
a mutator would need to be made to get this result. its not to difficult though