This man is not build like a giant with bulging muscles, as you can find them every once in a while.
Though the slender man is a bit taller and more trained than the average man. A bit like a wiry athlete.
Well kept, jetblack hair and a beard decorating his face with the rugged, sharp features and its prominent jawline. All in all he has a quite masculine, handsome look.

Though this is only one of the two appearances he can adopt.

The second one is far more imposing, yet even terrifying to some.
He can shift into something wich appears to be a large, bipedal black Jackal-Hybrid. His lean body will grow, the muscles begin to bulge more and thick, jetblack fur will sprout on every inch of his skin.
The mans once handsome face transforms to the one of a feral lupine predator, with an untamed mane, cunning, yellow eyes and large, sharp fangs.
Even a long, tail with wild bushy hair will grow out of his back.
Finally all his nails shift into sharp claws, to complete the look of a fierce creature. Still he rahter retains the look of a fast, agile predator, than a hulking brute.

He tends to wear comfortable more practical clothes. A lot of pouches, belts and holsters dangle on his body. Those are filled with dozens of tools and gadgets only a mechanic or engineer would need.