Talk:Brain/@comment-24137779-20150224182132/@comment-24821572-20150225163545

It's mentioned on the Pet Zombie page. Most of the console/mobile exclusive pets do that. Apparently Engine decided to make combat pets before Relogic decided to add summons. Between the two, the latter is better because they have proper A.I to help fighting enemies. Also, none of the original pets inflict damage.