Shenron Goku

The form taken place when Piccolo asked Shenron to give Goku his energy. Goku and Shenron fuse together to make a form that is super powerful. It is reffered sometimes as Eternal Super Saiyan Form.

Shenron Goku Vs. Huihuai
Huihuai is the lord of destruction. Goku is not powerful enough in Super Saiyan 3 form or as Gogeta so they summon the power of the eternal dragon shenron to lend Goku it's power for the fight.

Goku and Hui fight for a while and Goku destroys Hui with an Eternal Kamehameha.