Thaddeus J. Collins is a character who appeared in From Hedorium to Eternity.
Thaddeus has one black eye and a design of a purple eye in the middle. He wears a black jacket, purple sweater, white sweater and a red tie. He also wears a ring on his hand which also has another design of a purple eye on it.
He is the owner of a supposedly haunted house. He became possessed by Zs'Skayr and was forced to do his evil deeds. He was freed from Zs'Skayr's possession when Ben, Gwen, Kevin, Cooper, Lucy and Jonesy stopped Zs'Skayr's evil plan.
Ben 10: Omniverse
- From Hedorium to Eternity (first appearance; flashback)
- The eye on his shirt and ring resembles a Corruptura.
- Thaddeus J. Collins' design resembles that of Barnabus Collins' from Dark Shadows.