Faeryl

Faeryl is a boss in Final Fantasy XIII-2, a dragon-like creature that lives on the Archylte Steppe in an unknown period of time that only appears on clear, sunny days.

Story
Swallowing the Black Hole Gem artefact, the miniflan that are sucked into faeryl's mouth are transported to Sunleth Waterscape at 300 AF where they merged into Royal Ripeness. Tracking faeryl down, Serah, Mog, and Noel kill the monster and obtain the Black Hole Gem reducing number of miniflan being transported through time.