Rook Blonko is a Revonnahgander from the planet Revonnah and is Ben's new partner in Ben 10: Omniverse

Rook Blonko
General Information
Species Revonnahgander
Age Revonnah

Ben Tennyson 
Rayona (Girlfriend)

Occupation(s) Plumber
Powers and abilities
Equipment Proto-Tool
Proto-Tech Armor


Voice Actor Bumper Robinson
First Appearance The More Things Change: Part 1


Rook is an alien with lavender-colored fur, black and white markings over his face, and pointed ears. He carries the Proto-Tool on his shoulder and wears a somewhat blue-colored Proto-Tech Armor.

Young rook

11 year old Rook

Young Rook looks the same,only shorter and with a tail.

Powers and abilities

Rook uses various Plumber weapons and technology, such as the Proto-Tool to help him in battle. Rook is adept at using the Proto-Tool as a sword, bow, grappling hook, blaster and a tonfa. It has also been shown that he is nimble and has impressive acrobatic skills. He also has very durable armor called Proto-Tech Armor.He is also a master in terms of strategy and battle tactics.

Rook is highly skilled in combat combining the use of his Proto-Tool with hand-to-hand combat to disarm, subdue or defeat opponents. Through the use of hand-to-hand combat Rook was able to fight on par with Ester.Rook has been shown to be an incredible marksman many times, an example is in A Jolt from the Past he was able to shoot Fistrick's tank from far away on a crane.


When Rook first met Ben in The More Things Change: Part 1, he was respectful of Ben, mentioning that he heard all about him in the Plumbers Academy among the cadets. Unlike Ben, Rook is more stoic and prefers to think before acting. He used to treat Ben more like a superior instead of a friend/partner as he usually addressed him as 'sir'. He now tends to see Ben as a lesser or equal being such as saying he always has to save Ben and that he (Ben) wouldn't even be alive without his (Rook's) help although Ben still manages to occasionally impress him from time to time. While he is very intelligent, his lack of experience can make him somewhat naive and often the butt of Ben's jokes. He seems to dislike chili fries. Nowadays he sees Ben as a friend, though Rook still has difficulty understanding his earthly expressions.


  • Tramm Wigzel (Executive producer of Omniverse) considers Ben to be an "all experience, but no knowledge" type of Plumber while he considers Rook to be an "all knowledge no experience" type of Plumber. He mentions that their partnership will be beneficial in covering their weaknesses.
  • It is confirmed his last name is Blonko
  • Rook thinks Alien X is something made up by fans of Ben on the extranet (space internet). That was the case until So Long, and Thanks for All the Smoothies?, though he continued to deny the alien until Bros in Space.
  • It is confirmed by Derrick that Rook has siblings.[2]
  • Rook has a deep grudge against the Vreedle Brothers because they destroyed the Plumber's Academy and thus he had to take his final exam in a trailer on an asteroid as a result.
  • According to Derrick J Wyatt, Rook possesses some feline attributes, such as having fur.[3]
  • It is revealed in Arrested Development that as a child, Rook had a tail.
  • It is confirmed by Derrick that Rook's species are simple farmers.[4]
  • It is confirmed by Derrick that Rook is a little older than Ben.[5]
  • In Bros in Space it is said that a lot of female Revonnahganders are infatuated with Rook.
  • In Bros in Space Rook's first name is actually his last name so his real name on Revonnah is Blonko Rook.
  • Rook hasn't appeared in the episodes Trouble HelixStore 23 and Special Delivery. Blukic And Driba Go To Area 51