Goku's mastery over Ki control allows him to stack Kaioken effects and later combine it with Super Saiyan transformations ... reaching heights like Kaioken x20 against the Ginyu Force during ...
From Super Saiyan God ... speed. Goku first unleashed Kaioken during his fight with Vegeta when he came to Earth to destroy it. When activated, the technique engulfs Goku in a striking red aura ...