Despite its impressive appearance and strength, Super Saiyan 2 didn’t get the recognition ... than it could have been. Kaioken was the very first transformation Goku used in the Dragon Ball ...

From the time Goku first became a Super Saiyan in the Namek Saga to the arrival of the sagas such as Kaioken Form and, more recently, God Form and Ultra Instinct, each of the forms has contributed ...