Stink Arms mostly resembled Four Arms with a few Stinkfly characteristics. Four Arm's eyes were replaced by Stinkfly's eye stalks. He also had Stinkfly's tail and wings.
Stink Arms wore a shirt based on Stinkfly's suit and Four Arms's pants. Stink Arms wore the Omnitrix symbol on his face.
Stink Arms' powers caused a few issues. Four Arms' super strength was weakened by Stinkfly's lesser strength. Stink Arms' huge mass made it hard to fly. Stink Arms had Stinkfly's sharp tail.
- It is unknown if Stink Arms could shoot Stinkfly goo.