DBZ

At this stage the Saiyan is similar in appearance to the legendary Super Saiyan form. Saiyan skin may become slightly red due to increased blood flow and muscle mass is increased to the point of ridiculous practice. Saiyan hair is growing and expanding in different directions. Aura does not flow up, but outside blades with bio-energy peaks of more frequent and more prominent.
In the series, Ultra Super Saiyan form is found that an advanced stage of Super Saiyan Ascended (itself an advanced stage of transformation of Super Saiyan), which increases stamina to Super Saiyan form. However, because this form is so muscle power up any speed increase would be denied, making unnecessary enemies module that was faster than Saiyan to begin with. In addition, the Saiyan power running out, because the effort required to simply maintain the transformation. In general, the negative aspects outweigh the positive steps.
Believing that passed under his father Vegeta, Trunks Ultra Super Saiyan came as the will to fight to defeat Perfect Cell, Vegeta. Even if he managed to keep for a while himself was also able to defeat Cell because of its inability to maintain the same speed. Due to lack of experience with these transformations, Trunks did not realize that as big as an inhibitor to its ability to fight, a feature that was also noted as Goku and Trunks told Cell Cell Vegeta was aware of this problem and, believing he did not use reason Vegeta Ultra Super Saiyan form and remained at its plateau, the increase of its normal Super Saiyan.
Perfect Cell showed a similar capacity to swell muscles when done for the fun of using Ultra Super Saiyan Trunks form. When Perfect Cell Gohan later fought in his Super Saiyan 2 form, he lost his temper and resort to using its power slowly, as weighted, which failed to help him win the battle.