Terraspin is the Omnitrix's DNA sample of a Geochelone Aerio from the planet Aldabra in the Andromeda Galaxy.
Terraspin is a green, turtle-like alien with eight holes in his shell. He also has large, flipper-like arms, and stumpy legs. The tips of his arms have three small tips each, which can extend finger-like claws to use as fingers. The Omnitrix symbol is located on his chest.
Besides his four main limbs, he now has a tail, as well as markings on his chest.
Powers and Abilities
Terraspin can create devastating wind blasts and tornadoes. When doing so, he retracts his head into his shell, opens a hatch to see, his fins become triangular, his legs are also retracted and his tail gets rigid in order to spin. His shell stays static and suspended while his limbs rotate at high speeds.
The holes in Terraspin's shell eject powerful winds, as well as the reverse, creating strong vacuums. He can use his winds to fly, blowing air to hover over a surface and using his rotating limbs as propellers.
Terraspin's wind blasts are powerful enough to redirect objects, but he also possesses enhanced strength, as he was able to charge into a building by busting down a door and punch a mutant seagull.
Terraspin is immune to poisonous gas, and is selectively immune to both spells and Mana. Terraspin possesses enhanced durability when he is completely withdrawn into his shell, as demonstrated by Galapagus.
Terraspin can extend the black holes at the tips of his flippers into finger-like claws and although Terraspin has never trained himself to do so, other Geochelone Aerios, including Addwaitya, are capable of using magic.
If he gets stuck to something and cannot spin his arms and legs, or if any the holes on his chest get blocked, Terraspin's wind powers will decrease.
Unless he is flying, Terraspin's body is cumbersome and not very agile. The position of his face also gives him a very big blind spot and he has to turn his entire body around to see behind him.
If a small object is jammed in Terraspin's shell, it can cause him to stop in order to remove the obstruction. This also appears to cause him great discomfort, as he describes the ordeal to be "really not comfortable".
Terraspin can be affected by magic if he is not using his magic immunity.
If Terraspin spins his whole body while holding onto something at high speed, it would leave Ben very dizzy as a result when he reverts to human.