Shaun was always pressured to be the best, his family legacy demanded it.
His father had been a championship runner, as had his grandfather, great grandfather....and so on, it was said they could even trace their lineage back to where records began maybe even before.
From the day he could stand on two legs, he was made to run, never to walk.

He trained hard in his youth, supported by his legacy and sponsorships, working night and day to build his body and his speed.
He earnt titles, awards and eventually his scholarship to a top university.

Arriving strong, he trained harder and harder, night and day, doing all to make sure he was better than father and those before him and even faster than the beasts of the world that he could keep pace with.

Then one night, while training at his peak, it happened.

As he ran the hurdles beneath the full moon, his body siezed as he made to jump, an ancient trace in his blood igniting to the perfect body and the lunar influence surged forth and his body began to shift.
Claws tore out from his running shoes, his shorts shredded as an immense tail burst forth and he yells became a reptillian shreak as his face jutted forwards into a reptillian snout.
His new jaw filling with razors sharp fangs as his skin darked under the emergence of shiny green scales.

At the side of the track, his professional coach could only stare in shock, the whistle falling from his mouth as he watched his client shift from a championship runner into a monsterous prehistoric beast which slowly turned in his direction, his claws and bestial eyes gleaming in the moonlight.