In appearance, the form is similar to Gogeta's Super Saiyan 4, with long red hair rather than Goku and Vegeta's usual shade of black. Though both are non-canon forms, Super Dragon Ball Heroes ...

Only Goku has mastered Kaioken, using up to x20 but never combining it with Super Saiyan. Combining Kaioken with SSJ is risky due to the emotional stress of SSJ affecting ki control. Kaioken is ...