By A Mystery Man Writer
The advanced DOKKAN BATTLE game reference site
Ultimate Trump Card Goku (Kaioken x20), Dokfan Battle Wiki
Dragon Ball Z Dokkan Battle on X: First-hand information on LR
The 14th World Tournament Opens!, News
The Trump Card Goku (Kaioken) Dragon Ball Z Dokkan Battle Wiki
Kaioken x20!!! DragonBallZ Amino
r/DokkanBattleReddit
The Trump Card Goku (Kaioken) (Pettan Battle), Dragon Ball Z Dokkan Battle Wiki
SSR The Trump Card - Goku (Kaioken) PHY
The Trump Card Goku (Kaioken)
The Ultimate Android Super 17
Can Saiyans use Kaio-ken like Goku does? - Quora