Sawbones' Avatar Exoskeleton is an epic-quality equipment item that is only available to Villains and is sold by Requisitions-T2V. Once equipped, it unlocks the Avatar Bombardier chest costume style.
Source[]
The Sawbones' Avatar Exoskeleton is sold by Requisitions-T2V, a vendor found within the Power Core of the Hall of Doom. The item costs $515 and 85x Mark of Conquest.
Vendor item[]
Style unlock[]
Upon equipping the Sawbones' Avatar Exoskeleton, a character unlocks the Avatar Bombardier chest costume style, which can be accessed at any time from the Style Window.