Sea serpent

The sea serpent (voiced by Lee Tockar) has a long, serpentine body, reminiscent of an Asian dragon, with purple scales, and orange hair, eyebrows, and mustache. He appears in the episode Friendship is Magic, part 2, where Night Mare Moon cuts off half of his mustache, sending him into a tantrum that renders the river impassable. Rarity sooths his tantrum by sacrificing her tail to regenerate his lost mustache through her unicorn magic. In thanks, the serpent offers his body as a bridge across the river. Fluttershy, who is afraid of large dragons in a later episode, shows no fear of the serpent.