Telewack is a humanoid transformation whose body is separated into six different segments: his head, main body, and two arms and two legs. His skin is brown and rocky, with green crystals protruding from various parts of his body. He has two horns on his head with black claws on his hands and feet. He wears black headgear with two small green circles and one larger white circled patterns on the headgear.
The Omnitrix symbol is located on his stomach.
- Telekinetic Limb Extension- Telewack's limbs can be extended ten feet from his body.
- Enhanced Durability- Due to his rock-like skin, Telewack is more durable to enemy hits.
- Extension Limit- If Telewack's limbs are pulled far enough away from his body they would lose function except for his head.
- Transformation Block- Telewack can't change back into Ben or into another alien if Telewack's limbs are separated.
- Some theorize the Corpus Pentram came from Ledgerdomain a long time ago but no one truly knows where they came from.