User blog comment:BannedLagiacrus/Monster Appreciation Week: Black Gravios (4th Gen)/@comment-27125903-20160109004450

Black Gravios... the only 1st gen subspecies aside from Red Khezu and Crimson Fatalis to have any noticable changes to it's attacks.

Preferring to use it's heat beam over charging and that fire gas instead of sleep gas.