Tess Mercer - Devastated after the death of her twin sister, her ability manifested itself so that she could create duplicates of herself. So far, she can only create one copy of herself--probably to fill the void that her dead sibling left.
Looks very similar to the moray eel my brother-in-law caught while fishing off the pier in Bodrum. Not quite what he was expecting to catch. Putting it back in the water was as frightening as its teeth.