The Dark Ultimate Super Saiyan is the Ultimate Super Saiyan form consumed by the darkness in one's heart. This form gives the user's power a boost of 25x making the user stronger then a normal Ultimate Super Saiyan.
Power Compared to the Original
The Dark Ultimate Super Saiyan is the only saiyan that can actually beat the original form. It's power thrives off of the darkness in the users heart.
The Sayian's hair spikes up like a normal Super Sayian, but the hair becomes red and the clothes become gray and with black and white shoes. The Saiyan andmits a red-black aura from the body.
Once a person has the abily to active this form once, just like The Evil Super Saiyan, it allows the user to awaken the other forms