BlocBoy JB is following suit with a lot of other artists by filing his own suit against the creators of Fortnite for allegedly stealing a dance he popularized ... TMZ has learned.
BB JB just sued Epic Games -- the company behind Fortnite Battle Royale -- for allegedly ripping off his dance the "Shoot" and throwing it into their game with a different name ... the "Hype" dance.
According to the docs, obtained by TMZ, BlocBoy claims he's the creator of the dance, and that Epic Games didn't get permission to use it in Fortnite.