His Tech Spec bio is an interesting one, it depicts a soldier that is scared by his own appearance, and chooses to hide that fact by constantly joking about it. A good character piece, that's possibly held back by the toy's gimmicky nature a little.
Grotusque's toy is a fairly typical one of the time; sturdy, blocky, little articulation. He also resembles some of his Headmaster cousins somewhat. The alt-mode is fantastic, being described as a 'winged sabre toothed tiger'. There's so many things wrong with that it's not even funny. He's also got a common 80's gimmick; the cold spark. If you press a button on his neck, his mouth opens and sparks fly out. I like cold sparks. There so incredibly pathetic to look at, I can't hate any toy that employs them. Hence my love of the Firecons.
Grotusque is a victim of being the wrong toy in the wrong time; Hasbro cared more about the 'Masters' gimmick than they did three Autobot monsters, it would seem. I guess they felt they'd already done the Dinobots, why bother with more monsters? Ironic, considering where the Transformers franchise would be ten years hence. See Alanis, that's what irony actually means.