Super Saiyan 5
Super Saiyan five is a fake stage of the Super Saiyantransformation. It was believed to appear in Dragonball AF, but now everybody knows that Dragonball AF doesn't exist, so Super Saiyan 5 has been left to the realm of fanfiction. There is a consensus on what Super Saiyan 5 looks like.
"The time has come to cpmplete my immortality... TO TURN SUPER SAIYAN 5!"