Ultimate G-merl

 Gemerl's Super Form is an unamed super transformation of the gizoid, Gemerl. This form is activated once Gemerl has collected all 7 Chaos Emeralds. His first appearance was in Sonic Advance 3

Apearance
In Gemerl's super form Gemerl becomes much more orb like and is much stronger. He seems to have 2 pairs of eyes (four eyes total). He has four extendable arms which have claw like hands. The hands are able shoot energy beams and missles. His weak spot is the blue "gem" in the center. The weak spot is useless to hit unless Super Sonic charges up and Eggman's Egg Mobile with energy and throws him at it.