Emerald Serenade

The Emerald Serenade (エメラルドセレナーデ) is an Emblem Heartless from Kingdom Hearts 358/2 Days. It is a member of a large family of Magic Heartless, whose names reflect their body color and a music-associated word.

Kingdom Hearts 358/2 Days
These large flying Heartless travel along a set path, making ambush a useful tactic. Their speed grows faster as their HP drops, rendering them increasingly tricky to finish off.