Oh, what the heck why not...
Name: Xenomorph
Age: two weeks.
Gender: it
Bio: It all started with a herd of ponies playing in a field. While they were playing, a spaceship fell to earth. They decided to explore the ship after it cooled down, but unfortunately a facehugger was inside, and it impregnated one of the ponies with an alien spawn. Shortly afterward the empire found the spawn and tried to control it, to use it against the resistance, but the alien escaped into the city. Now it lurks in the dark places
Powers: acid blood, thick carapace, spike tail, fleet footedness, very strong, requires no food, metallic teeth, second mouth, dark vision, silent movement, swimming, wall and ceiling walking, amphibious, can survive in the vacuum of space, impervious to fire, can sustain considerable pressure, and is able to make additional alien creatures by stealing MLP genes and altering them with alien genes. After a short gestational period, more facehuggers will be born.
Weapons: i am the ultimate weapon.
Side: neutral.
Pets of some sort: pets are for food.
Name: Big Macintosh
Age: older than Applejack and Apple Bloom
Gender: male
Bio: After the war broke out, someone had to take the reigns and restore some order. I'm not in charge, but i lend a hand wherever i can.
Powers: wisdom and patience.
Weapons: I'd rather not use them.
Side: Resistance.
Pets of some sort: not enough time for em. gotta look after my siblings.