"Hey, don't start without me!" Jason said, throwing off his hoodie, shirt, tie, and undergarments. As he did so, black tendrils formed on his chest and quickly spread to his arms, legs, head and face.
"Alright Erebus, time to do your thing!" He said, shedding the remaining articles of clothes and starting to sprint.
As the tendrils spread to his hands, they formed into long, blue claws as they reached his fingertips. As they covered his face, four blue spikes stretched out the back of his head, and blue markings gathered to the middle of his face. Three blue markings also appeared under his right eye.
"YAHOOO!!!" He yelled as he ran onto the course, bounding over acid pits, dodging spikes, and fluidly evading anything else in his way with the elegance and agility of a pro gymnast.