Trunks demonstrates his power by transforming into a Super Saiyan and testing Goku’s strength in a brief sparring match, which Goku effortlessly blocks with a single finger.
💡 In some older English "Season" releases or the Dragon Ball Z Kai revision, episode 122 refers to different plot points (such as the Buu Saga fusion training). The "Mystery Revealed" title is specific to the original Trunks Saga . Dragon Ball Z (Dub) Episode 122
Goku, Future Trunks, Vegeta , Piccolo, and Bulma . Trunks demonstrates his power by transforming into a