Triedge has a vaguely humanoid body, with rock-coloured skin. He has a large triangle-like head with two green eyes. His body is covered in small holes. His hands have three fingers, and his feet have three toes. He also has a small tail, and the Omnitrix symbol is on his stomach.
Powers and Abilities
Triedge possesses the ability to manipulate life force- moving it from being to being or using it to empower himself. This power extends between passively absorbing mana from nearby Anodites to being able to reduce incredibly powerful beings to dust. Triedge is both incredibly powerful and incredibly dangerous.
Triedge has demonstrated no weaknesses so far, save for Ben's hesitation to use him as shown in In The Shadow Of Vilgax.
Ben met a Necroterran named Osiris in The Only Good Necroterran. Although Ben antagonised her based on his own misunderstanding of this form, she taught Ben the true nature of their abilities and how she used them to run a hospital. Ben renamed his alien Triedge to honour this new understanding.
Ben finally used Triedge in combat in Life On Mars. He used the alien to destroy Brave New World- having deemed the creature too dangerous to live and realising there was no other way to stop it.