Four Arms is a Tetramand from Khoros.
His skin is bright red and very tough, because it is armored. The black stubble stripe goes from the bridge of his nose to his neck. A second black stripe goes from his chin to his lower lip, and he has four eyes: a main pair, and a smaller pair below them. In the original series he wears a white t-shirt with a line going down it and black pants. In Ultimate Alien he wears gold wrist and ankle bands, has a black underwear that has an elastic waistband cover made of gold and two sashes going across his chest.
Four Arms is a 12-foot-tall (3.7 m) four-armed, four-eyed powerhouse with armored skin and extremely dense musculature,making extremely strong. His strength is such that he can create shockwaves simply by pounding the ground or clapping all four of his hands together, dubbed the "Big Smack", and his leg strength allows him to cross entire city blocks in a single jump. He is also able to crawl up walls easily.