If it's IDW version (where he gets killed by Megatron) I agree. Then he should be SS86 Wreck-Gar retool. If it's more classic-based he should be a Deluxe since he was same height of Crasher. I'm hoping Axelgrease is a Scraphook retool. Scraphook mold needs to be utilised more, if I'm being honest here. Instead of another bike I'd like another offroad vehicle, I don't see why Junkions must be restricted to bikes. If not he probably shares parts with Scraphook. Alternately some have suggested it's Shadow Striker retooled from the Legacy Knockout mold. Which I wouldn't really mind.