Crumble is greenish-gray coloured creature with big ears. He wears a fancy white ruffled shirt with a fancy black jacket on top of it. He is Donovan's father's minion, and has been in their family for about 2,351 years.
Crumble will stop at nothing to get to Avalon, so he himself can rule it. He eventually turns Donovan into a minion so he will follow his commands and deceive the mages. He was seen trying to steal Emily's jewel and has suspiciously admired all three of the mages jewels.