In honor of one of Goku's coolest techniques, here's a look at how he acquired it and how he uses it throughout Dragon Ball Z and Dragon Ball Super.
Goku Can Already Give Ultra Instinct a Massive Power-Up With One Classic Technique - IMDb
Son Goku - The Codex
THE BETRAYED SAIYAN WARRIOR - LEARNING KAIOKEN & THE SPIRIT BOMB - Wattpad
The Science of the Kaioken Technique
Dragon Ball Z Figure Son Goku Earth Grown Saiyan Namco Limited Kaio Ken Ver
Kaio-ken, Dragon Ball Wiki
Dragon Ball Z Goku Kaioken Version 1 8 Inch Plush Figure, 1 Unit - Harris Teeter
Dragon Ball Z (season 1) - Wikipedia
Remembering the first godly form Goku ever achieved