[ariellagunas]

The Grey Beast was the original X-Men Beast, whom experimented on himself, and turn into a more monstrous, and grey Beast.
This was part of the whole monster trend in the seventies. Tigra was another re-launch from The Cat.
Grey Beast debuted in Amazing Adventures for a few issues. Later, can't remember how, he joined the Avengers and he was Blu-black, and his features softened, and became fun loving, but still nerdy Beast, whom hang around with best pal Wonder Man.

Toy ways, Marvel Universe did a correct face sculpt on grey Beast in the 4" line.

People, included myself, wanted a happy Avengers Beast, as depicted by George Perez and John Byrne among others.

This new sculpt is base on that Avengers period. But he wasn't grey anymore. So it's a Mix-mash of the "horror" beast (the colour) and the Avengers beast (the new head sculpt).

This is all from top of my head, so happy to be corrected.