Rook possesses a vast scientific and technological knowledge of alien paraphernalia, given his notice of his younger brother 's modifications to a harvester for space flight.

Magistratus Rook Blonko is the leader of the Plumbers. He is Rook's future self as of Omniverse. [note 1] [note 2] Rook is noticeably older, sporting a beard and no longer wearing his Proto-Tech Armor, replacing it with a Plumber Suit. Having spent decades on Earth, Rook has come to fully...

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In Hot Stretch, Generator Vendor argued with Rook about the quality of the old thermo-electric generator he was selling. Ben then bought a bottle of water from him for a tayden.

Rook recommends Ben to transform into Alien X, but Ben is unsure if the Omnitrix will let him. Ben does successfully transform into Alien X, much to Rook's awe, but is left immobile as Ben must negotiate with Serena and Bellicus first.

When Ben and Rook investigate a mysterious alien ghost ship, they discover that Argit and the Vreedle Brothers are fighting for possession of a doomsday device!

Alien Force [DM 1] was the team that Ben formed after his grandfather, Max Tennyson, mysteriously disappeared. Without his grandfather's guidance, he assembles a team under Max's last orders to him.

At first, Ben was not fond of having a new partner as he wanted to be a solo superhero, but after Rook helped Ben apprehend Psyphon and members of his gang and Rook bought Chili Fries for Ben, he accepted Rook as his partner.

Alien Force Attea was kidnapped by SevenSeven for ransom money, but she offered him twice the money to help her dethrone her father, which she nearly did, but it was short-lived as Swampfire defeated the Incurseans and her father escaped from the dungeon.