This is my entry.
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
You can name him whatever you like, obviously. His cutie mark is a microphone surrounded by music notes/clefs, I can change it if you'd like, I just pictured him as a singer. His accesories include: five bangles on his front left leg (the green one he wears for her, the color of her mane and tail), a 'tattoo' on his hind right leg of an eigth note, and a locket. The locket is special, it's in the shape of an eigth note as well, with a green-yellow heart on it to show his love for her, inside of the bottom is a small picture of her, so he can take her with him whereever he goes.
If I don't win, I'd like to keep him (I'll change the accesories pertaining to her, of course.)