Ben 10: Omniverse

Ben 10: Omniverse follows the adventures of teenager Ben Tennyson, who continues to wield the power of the Omnitrix to protect the universe from various intergalactic threats. After his partner Gwen leaves for college and Kevin Levin moves on, Ben is paired with a new, by-the-book rookie Plumber partner named Rook Blonko. Together, they navigate the Undertown, a hidden alien city beneath the streets of Bellwood, while dealing with old enemies and new, more dangerous foes. The series explores a unique narrative structure, alternating between Ben's current adventures with Rook and flashbacks to his childhood, featuring a younger version of Ben and his partner Rook's mentor. As the series progresses, the stakes escalate to multiversal proportions, involving time travel, alternate dimensions, and the return of iconic villains like Vilgax and Albedo, all while Ben learns to balance his responsibilities as a hero with his personal growth.