In John Smith 10, he has his Gen Rex appearance. Shocksquatch has the appearance of a thick, muscular Sasquatch-like alien. He has white, gray, and blue fur, along with a reddish-pink face, and pointed eyebrows. He also has green eyes with black pupils. He has metallic gray circular bolts on the back of his hands and on his lower jaw. The Omnitrix symbol is on his chest.
In Ryder 10, he has his Omniverse appearance. Shocksquatch appears slimmer than before and he now has yellow and black fur, along with grey fingers and toes. He now has four fingers instead of five. He also now has two bolts on the side of his wrist instead of the back of his hands. He has green eyes with black pupils and yellow horns. He also has a green belt where the Omnitrix symbol is located.
For his Dimension 23 appearance, see Thunder Zerker below.
Shocksquatch is one of John's original 10. He is physically the strongest of his original 10, and was his primary fighter in early seasons. He still gets a moderate amount of use.
Thunder Zerker is the version of Shocksquatch that appears in Dimension 23. He is used by Protoman. He wears the red Proto-tech armor, and his yellow fur is maroon instead. While he fights using his lightning, his primary use of it is using telekinesis on Protoman's Shield, causing it to float and be launched as a weapon. He's been shown to do varying things with this tactic.
Shocksquatch is one of the few aliens that doesn't gain his Omniverse design in John Smith 10: Omniverse. This is because his Ultimate Form uses his Omniverse design.