Let's try this...

Name: Toluene

Race: Earth pony. Mostly...

Cutie Mark/Special Talent: The cutie mark is kept hidden, but she definitely has a gift for making and using explosives.

Virtue: While she does not often associate with others, if you could make friends with her she would be very loyal. Of course, she is very shy and avoids making friends...

Appearance: Forest green with a dark green mane that she always hangs to her right, and she has bright red eyes. Beyond that, she has leafy vines growing in her mane and tail and some leaves growing on the rest of her body. For the most part, she arranges these leaves to cover her cutie mark.

Faction: None. She lives alone, in the middle of the Everfree forest. The animals avoid her, and she doesn't seem to mind the Killing Joke...

Skills: Incredible stealth ability, can even move at a full gallop without making a sound. On the other hand, she can't seem to make a lot of noise in general. Beyond that, she has knowledge (learned the hard way) about herbs, fruits, creatures, and surviving in the forest. There is definitely something else going on here, as she should probably be dead several times over by now...

Equipment: Saddlebags with survival essentials. You know, twine, grenades, food, fuses, water, dynamite, medicine, black powder, a lighter, explosives...