Ultimate Spiderfreak is a red, black, and brown massive humanoid spider. His brown patches are covered in small hairs that may irritate the skin, whereas his red and black patches are a smooth exoskeleton. He has numerous spikes lining his arms and legs, and two back-mounted 'turrets' that resemble his unevolved form's abdomen. His forearms split into three seperate branches that each end in a sharp claw. The evolved SpecTrix symbol is on his chest.
Ultimate Spiderfreak loses quite a bit of the speed and maneuverability his unevolved form has.
Ultimate Spiderfreak was created long before his debut, originally intended as a redesign of his unevolved form. Seeing as how such a drastic change in appearance would be one heck of a stretch, he was instead retooled into his current incarnation.