As you was standing in first of cell before he explodes you sacrifice your life for protecting the Earth and Goku and his friends were sad, shocked and depressed about your death Goku: I can't believe he died by holding cell before he exploded Vegeta: scoffs Yeah, I still miss him? Goku's friend's: Yeah, he was a good sayian fighter? everyone felt sad about your death and 2 years later you came back alive by goku wishing you back alive with the dragon balls Goku: Welcome back!