Goshin is the 12 year old son of Goten and Bulla.He along with his best friend Roku trained so uk hard they were abler to achieve the super saiyan levels 1-3. He along with Roku learned how to use the Potara earrings and the Fusion Dance to become Roshin & Gosku repsectively.He and Roku fought Jamemba and their tails regrew. Allowing them to transform into Golden Great Apes and then Super Saiyan 4.Goshin toke longer to control himself though.They defeated Janemba and lived peacefully for a while.