I found this old character doodle. It was unfinished and it didn't look very good. When I saw it this morning I liked the spikey head/ball on the end of the chain. I re-worked the rest of it, and it still isn't great, but here it is anyway.
He'd be just the kind of guy you'd find in your dungeon monster manual. "This beast roams the lower levels of abandoned dungeons. They tend to travel alone and because of their great strength and frightening roar, they will attack small groups of travelers and adventurers without hesitation. They are of low intelligence and maybe that's why they hold their maces as though they were guitars."