“The reason this kick is so powerful and the cause of sick knockouts is because it puts the user’s whole weight into a solid strike. The two main variations are the Front Roll (Tate Kaiten) and the Side Roll (Yoko Kaiten): – The front roll is safer, makes you stand up while rolling and works like an Axe Kick. – The side roll is more risky and only a select few people are capable of doing it properly in the air, but is extremely powerful and acts almost like an overpowered Spinning Hook Kick.
Wherever it hits, it will ALWAYS stagger the opponent. The main flaw of this kick is when it doesn’t connect, as the sideways version of it puts your back flat on the ground, making you vulnerable in non-stand-up bouts.” - Strider Hien