Dusk is a very tall abandoned bat pony colt because his parents didnt want a son, they wanted a daughter. Right now he lives in a cave but before he lived in a cave though, Dusk lived in a dumpster where he would listen to what ponies said, thats how he learned to speak English/Equestrian. But ponies found out he was living there so he fled to the everfree forest in a abandoned cave at the age of 8. He was always afraid of every pony but that changed when he met a special somepony...

(Just remembered something, the "im your sword, im your shield" quote is a quote from Halo, I SHOULD HAVE KNOWN THAT ITS MY FAVOURITE GAME SERIES!)