Dragon Ball XT: Dark Inferno

Season 1: Subzero Cooler, the Persistent Alien Demon
"Even if you have a new form, I'm still able to kill you"

- Goku to Cooler

Vegeta and Goku entered the Other World Tournament to fight, but Pikkon showed up and told them that he wanted to fight too. Pikkon knocked Goku down to the ground and Goku transformed into Super Kaioken and knocked Pikkon into a moon. Goku exclaimed, "What's wrong with you Pikkon!" Pikkon suddenly disintegrated and reformed into a new being.

The being was Cooler, but he was different. He wasn't normal, nor metal. He had many pointy ends, however, he looked more like his 2nd form. Cooler said, "Now I'm able to kill you pitiful primates even if you become a Super Saiyan." Instead of Super Saiyan, both Vegeta and Goku go Super Saiyan 2 and nearly eliminates Cooler