Grandpa Gohan (a.k.a. Gohan the first) is the adopted grandfather to Goku. He is voiced by Lanipator. So far, he only appears in the special Bardock: Father of Goku.
- Him being voiced by Lanipator (voice of Vegeta) may be a reference to FUNimation dub, as Chris Sabat voices both Vegeta and Grandpa Gohan
- He makes reference to Clark Kent (a.k.a. Superman), since Toriyama based the Z origin of Goku on Superman.
- In Freeza Burn, Goku make a refference to his grandpa, saying he doesn't need a bath (after pulling back by Piccolo from the lake).