Tank is a shadow bear about the size of an army tank and has a light purple glow, visible scratch marks on his left eye, a thin flaming strip of hair along his head and back, and a large X-shaped scar on his chest.
As an ice bear, Tank typically behaves in an animalistic manner, plowing through enemies with brute force and ripping them apart with his teeth and claws. However, he does have intelligence, as displayed when he successfully worked together with Iron to kill one of Kargalgan's generals.
As a Knight Grade Shadow, Tank is about as powerful as an A-Rank Hunter. He was also strong enough to plow his way through a horde of demons like they were bowling pins and kill a naga in one hit.