Super Saiyan 2 (超スーパーサイヤ人じん２ツー, Sūpā Saiya-jin Tsū), initially referred to in-universe as Ascended Super Saiyan and at the time of its debut also known as Super Saiyan Fifth Grade, is the direct successor to the first Super Saiyan transformation. It is very similar to the original form in appearance and attainment; however, the power output is far greater, as speed, strength, and energy output all drastically increase.
Gohan is the first person to attain the form in the manga and the anime, and he uses it while fighting against Cell in the Cell Games. Goku, Vegeta and Future Trunks soon follow. Goku trains to achieve it in the Other World, while both Vegeta and Future Trunks reach the form by training on Earth. Caulifla attains this form right after becoming a Super Saiyan and is the first female Super Saiyan 2.
There are four ways to achieve this transformation, a requirement for all four is that the Saiyan must first gain a large quantity of energy (usually by training), far beyond that required for the first Super Saiyan form. The first method is that the Saiyan m...