In this episode, the villain —a Galvan trapped in a human form similar to Ben's—orchestrates a plan to obtain a device that will restore his original form.
The reference to most commonly refers to an episode of the animated series Ben 10: Omniverse . [S2E17] The Ultimate Heist
While the show is famous for its "Halloween Heist" episodes, fans sometimes refer to the grand finale or specific high-stakes heist episodes (like "The Last Day") using similar titles. "Ben 10: Omniverse" The Ultimate Heist (TV Episode 2013) In this episode, the villain —a Galvan trapped
Albedo successfully switches places with Ben Tennyson, sending Ben to the Plumber HQ prison while he infiltrates the team. "Ben 10: Omniverse" The Ultimate Heist (TV Episode
While the numbering can vary due to different airing and DVD orders, it is officially recognized as the 37th episode overall and is often categorized as Season 2, Episode 17 in certain broadcast schedules. Episode Overview