Ben 10: Omniverse Halloween Special! — Viz
Issue: #1
When he was ten years old, Ben Tennyson discovered the Omnitrix, a device that saves and catalogs DNA and then can distribute those powers and attributes to its owner in times of need. Ben becomes a superhero, battling the forces of evil for the next 15 years. Now living in Undertown, a hidden alien community on Earth, sixteen-year-old Ben is saddled with a new partner Rook, a by-the-book plumber,...
First appearances: Rook Blonko
Creators: Alan Brown, Marcelo Matere, Corin Howell, Joel Enos, B. Clay Moore
Characters: Rook Blonko, Ben 10