Wars of the Black Alliance
Fisto is over 7 ft tall and almost as wide. Its proportions scream “wrong”. Sewn together from bodyparts from giant orcs, bugbears and several other big humanoids. Imbued with foul magics and the awesome power of dramatic lightning strikes to bring it all to life and move. Though Fisto seems really big, it all fades in comparison to its fists That must have surely belonged to a giant of some kind.
Update: Fisto was slain by the heroes outside the Magus’ tower after a hard fight. It was Slak the Barbarian who finally brought the monster down.