Deep is a small humanoid fish boy with blue-green scales, fin-ears, a mop of messy black hair, an angler bulb, three arms, three pupiless blue eyes, and a whale tail lower body he slithers on. Sebastian is the father and mother of it, looking exactly like him but much bigger, sassier, meaner, and aggressive. He is highly protective of Deep, and will kill anyone who hurts or upsets him without hesitation. Seb was originally human. If Deep likes someone, he might be more soft towards them.