RWBY has 16 episodes. RWBY stands for Red, White, Black, Yellow which represent the four main characters. It is an American/western anime made by Rooster Teeth. RWBY is set in a world where monsters have started to show up on earth and some humans go to school to become hunters and huntresses.
Velvet's mimicry is EXACT. Her "weapon" doesn't just make a copy of every weapon it snaps a picture of, it gives her the full power to wield that weapon as good as its original owner! That, my friends, is AWESOME!