ZenkaiOh is the principal robot of Kikai Sentai Zenkaiger, the 2021 Super Sentai anniversary season. It is unusual because its core combination initially centers on two giant machines, Zenkaijuurus and Zenkaijiren, with additional components and combinations expanding its capabilities. Its design incorporates visual references to earlier Super Sentai robots, fitting the season’s multiverse and anniversary concept. ZenkaiOh is therefore both a combat machine and a celebration of the franchise’s history. Its brightly colored, highly stylized appearance intentionally evokes the bold designs associated with classic Super Sentai.