Physically, Snarkle (as he has come to be called) is of average build but with slightly more delicate features, due to his pegasi heritage. His coat is camel, and his mane and tail are a deep brown or black, depending on the sunlight. His eyes are amber.
Cutie MarkHis cutie mark reflects his dour, taciturn nature when there's work to be done. It doesn't encompass his entire being, but it does embody what he does best - an even, unflinching gaze at Equestrian literature. An image is included here. His peers at EQD call it the 'Look of Disapproval'.
Twilight Snarkle is a pen name, created during a fit of editor's rage following the exploits of the Elements of Harmony. After seeing the fourteenth report in the same day from field journalists flowing with emotion, but no facts, he penned a furious letter to all of them, and paid out of his own pocket for a messenger dragon to deliver them directly. A responding note stated, quote, "Whoa. Chill out, Twilight Snarkle." He liked it so much, he kept it.