In the English dub, Episode 122 , titled "Mystery Revealed," primarily focuses on the revelation of Future Trunks' identity and his dire warning about the impending Android threat . Episode Overview: "Mystery Revealed"
The boy reveals he is the son of Vegeta and Bulma , having traveled 20 years from the future. Dragon Ball Z (Dub) Episode 122
The English dub for this episode is available through the Crunchyroll Dragon Ball Z collection . Trunks Saga / Androids Saga. In the English dub, Episode 122 , titled
After Goku arrives back on Earth, the mysterious young man who defeated asks to speak with him privately. Key Revelations Trunks Saga / Androids Saga
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.
Trunks provides Goku with a heart medicine from the future to ensure he survives the coming conflict. Technical Details (Funimation Dub)
Trunks departs back to his timeline, leaving the Z Fighters to prepare for the attack in three years.