He is voiced by Masaki Kawanabe in the Japanese version of the anime, and by Michael Chinnici and Corey Cleary-Stoner in the English version of the anime.
Jet is a slim, young man of average height with orange hair, kept jutting backwards at the sides of his head. He has a sharp face, a prominent, flat and defined nose pointing downwards, and distinctive teeth, with a protruding, sharp, triangular-shaped upper molar complemented by a chipped portion on the lower row, something which allows him to close his teeth completely despite such a peculiar physical irregularity. After the timeskip, the only notable change in Jet’s appearance is his hair, which is now gathered on the back of his head and tied in a short, spiky ponytail by a dark band.
Jet initially donned an open, light-brown coat with yellowish fur trimmings on its edges and sleeves, which reached down below his elbows. Below it was a high-collared purple shirt, with its collar mostly left open, which was sometimes seen left hanging over the checkered belt below it, with a rectangular buckle, and others tucked inside the baggy dark pants covering Jet’s legs, in turn tucked inside dark boots. He was sometimes shown with a bracelet composed of thin ropes around his right wrist, and a watch around his left. The most distinctive piece of his attire is probably the fancy, extremely high hat matching his coat, with a large brim and fur trimmings over its entire length, at regular intervals, plus a large furry ball on its top. After the timeskip, Jet dons a high-collared dark shirt, with light edges and sleeves reaching down below his elbows, adorned by a motif reminiscent of a wing and two resembling large leafs, respectively on the right part of the collar and on the upper parts of the sleeves, under a cuirass-like cloth covering the lower part of his chest, held up by two light bands passing over his shoulders. He doesn't sport his hat anymore, though his pants and boots seem to have remained the same.
At some point of Jet's childhood, his parents died of unknown reasons.
Jet was a childhood friend of another two orphans named Droy and Levy, and later joined Fairy Tail with them, forming the team Shadow Gear. He holds the record for the second fastest rejection, after confessing his love to Levy and being rejected in two seconds. His real name is Sarusuke, with his nickname, 'Jet', presumably coming from his type of Magic, High Speed.