Red Moglin

Locations:
Price: 3,000 Gold
Sellback: 750 Gold
Rarity: Weird Rarity
Description: This isn't Twilly, but he had a roommate whose cousin's uncle was brothers with Twilly's aunt's nephew's Ear-Cleaning class teacher.
Note: Also see List of all Moglin Pets.

Thanks to Kanai_Izumi, Nightly and Reign Man.