Blocky comes from Battle for Dream Island, the animated web series by Jacknjellify that launched on YouTube in 2010 and later continued as BFB and The Power of Two. As the show's fandom grew on YouTube and TikTok, short character reactions were clipped for soundboards and edits, much like Nelson's HA-HA! from a different cartoon era. Blocky's laugh fits that tradition perfectly, giving editors a recognizable BFDI reaction that works even without context and keeps circulating in fan animations and meme compilations.