Future Trunks challenges Black and Future Zamasu on his own. Goku, Vegeta, and Bulma hurry back to save him, but upon arrival, the time machine is damaged! This time the Saiyan prince is itching to dish out some payback!Future Trunks challenges Black and Future Zamasu on his own. Goku, Vegeta, and Bulma hurry back to save him, but upon arrival, the time machine is damaged! This time the Saiyan prince is itching to dish out some payback!