Homebrew Gargantuan mind bat Species Details

The mind bat is a creature spawned from an evil-aligning spellcaster taking the brain of another creature (the creature must be dead) of any size, and mutating it so it has bat wings. The mind bat then follows the spellcaster's commands, and seeks out other minds to latch on to and control. If it is a tiny mind and it attempts to control a tiny creature, then there is no advantage nor disadvantage. But if it tries to control a medium creature, it has a disadvantage. You get the idea. They exist to purely control and comply. 

Gargantuan mind bat Traits

Chaotic, destructive, mindless, ironically.