Jethain is a muscular male horse with tan fur, blue eyes and brown hair. He has countershaded fur from the face to his crotch. His arms, legs and inner ears have lighter fur, using the same color as his countershading. (See gloves_(marking) and socks_(marking).)
The character is owned by Varg Itzal (vargitzal on furaffinity), was bought from hiro2196 and was (at least partially) designed by pollo-chan.
For reference images, visit https://www.furaffinity.net/view/36102493/ and https://www.furaffinity.net/view/45270671/