Kaiō-ken Attack

Kaiō-ken Attack is 's side special move variant while in Kaiō-ken in Super Smash Flash 2.

Overview
When performed, Goku makes a brief stop and then dashes forward while surrounded with a large red burst of energy. The energy stays for about a third of a second before disappearing, dealing 8% damage and moderate knockback to any opponent hit by it. The attack may be more useful use a recovering move, as it covers a huge horizontal trajectory and does not render Goku helpless (unlike many other recovering moves), making him able to use it over and over. Goku also keeps all of his horizontal momentum as the move ends when used in the air, which considerably helps him cover more distance.

Origin
Kaiō-ken Attack is a Kaiō-ken technique used by Goku in, where it works differently. To use it, Goku powers up to Kaiō-ken x3 as he charges at the opponent and roundhouse kicks them up into the air. Then, he flies up into the air and punches the opponent away. Next, he flies up over the opponent and down behind to double kick them further up into the air. Finally, Goku flies up into the air around the opponent and hook kicks them down into the ground, inflicting a huge amount of damage.

Trivia

 * In v0.7 of the demo, Kaiō-ken Attack worked closer to the actual attack in the Dragon Ball series, possessing a combo of punches and kicks.
 * Both the first and the second version of the move also covered a considerably larger distance, but rendered Goku helpless afterwards.