Piano
Is a mutated offspring of the evil demon king Piccolo. You must defeat him before you are able to take on Piccolo himself.
Currently all four of the demon offspring have been roaming an nice area called 4 Go London Mori Park. This is a nice park where all members of the family can enjoy.
To find Piano you must go a little off the clearing into the bushes and begin your search from behind a tree. Once you find and beat Piano you can get part of the coords to find Piccolo.