Slader is a Level 6 Vigilance and is a villain of Shadow Spiderman. He was tested on at the age of 12, and barely survived. He came back with a scar across his eye. Slader raided a military base to get armor, and took a prototype UTS-1, along with two halfs of a helmet that he later welded together. His first appearance in Shadow Spiderman will be Season 1 Episode 19: 'Slay the Beast'.