battle cat evil equivalentPanthor is Skeletor's evil feline companion, a giant purple panther who serves as an evil counterpart to Battle Cat. Panthor is portrayed as Skeletor's pet, being at the right of his throne. Perhaps not coincidentally, Skeletor's behavior with Panthor looks very similar to other evil-mastermind-and-cat pairs, such as Inspector Gadget's Dr. Claw or Ernst Stavro Blofeld from the James Bond films (except that Panthor is bigger and more feral than the other cats). In battle, Panthor dons an armor that allows Skeletor to ride him. Sometimes, Skeletor acts cruel and nasty to Panthor but, when compared with Skeletor's behavior to his other henchmen, Panthor is relatively well treated.
In the 2002 series, Panthor was only ridden twice. He was also portrayed as the only thing Skeletor was actually attached to. He never berates Panthor, and in fact talks to him more on the level of equals than he does with any of his other warriors, with the possible exception of Evil Lyn.
http://en.wikipedia.org/wiki/Skeletor#Panthor