Rook Blonko
Species: Revonnahgander
Homeworld: Revonnah
Powers: Excellent hand-to-hand combatant, advanced acrobatics, enhanced reflexes, enhanced senses, enhanced speed.
Occupation: Plumber, mechanic
Allies: Ben Tennyson (partner) Gwen Tennyson, Kevin Levin, Rayona (girlfriend) Majestor Max Tennyson
Relatives: Rook Sharr (sister) Little One/Rook Ben (youngest brother)
Foes: Master Kundo, Fisttrick
Rook Blonko became Ben's new partner in the series Ben 10: Omniverse and Kevin and Gwen kind of left which to me personally was about time because it would be kind of annoying seeing Kevin and Gwen still fighting bad guys with Ben especially when it was that way in Ben 10: Alien Force and Ben 10: Ultimate Alien. It was kind of cool seeing Ben and Rook be partners in Ben 10: Omniverse.