A Star KO is a type of KO in which opponents get KO'd by passing the upper blast line, tumbling and falling in the background while screaming or yelling, to eventually disappear as a star. Characters who have above average accelerated falling speed are less susceptible to this then characters with below average falling speeds. This type of KO has been present in all of the Super Smash Bros. games. It was absent from the first Super Smash Flash, but was added to the sequel Super Smash Flash 2.
- There's a glitch where Goku uses Kaiō-ken mode after being Star KO, the flash star appears and it will be stay for a long time until you'll get another Star KO for Goku. If it does, the flash star will disappeared.