|Occupation(s)|| Magister ranked Plumber (formerly)|
|Powers and Abilities|
|Alternate Counterparts|| Rook Blonko (younger self)|
|Voice Actor||Bumper Robinson|
|First Appearance||The End of an Era|
Having spent over decades on Earth, Rook has come to fully understand Earth slang and puns, regularly pretending to not in front of Ben 10,000 as a joke.
In The End of an Era, Max retired and Rook has taken his place as Magistratus.
Powers and Abilities
As Magistratus, Rook has the final say in all matters in the organization and every Plumber is answerable to him.
Ben 10: Omniverse
- The End of an Era (first appearance)