"That also means a lot, thank you." Trunks said softly. "When I went to the past, I killed Freiza, for what it's worth." Never mind that apparently he somehow comes back according to Piccolo...Trunks still wasn't sure he wanted to know HOW.

"I met him when he showed up on Earth a few hours before Goku was due back, so he wasn't able to do any damage. He and his father--killed them both."