Odama (大玉) is Kodama's grandfather.
He lives in Fireworks Island. He wears kabuki make-up and has a rude attitude, though he still felt sad for the lost of Kodama's parents. At first, Odama refused to allow her grand-daughter to release the Ball 205 due to its destructive capabilities, but, thanks to Usopp, he decides to release it, making Kodama's dream come true.

First Appearance: Episode 134

Source: http://onepiece.wikia.com/wiki/Odama