Complex sentence: Miller created the Filthy Frank character during his time on his DizastaMusic channel, where he created sketch comedy-based content, but the channel started gaining popularity once he conceptualised Frank, who is described as the anti-vlogger of YouTube.
Split into simpler sentences: Miller created the Filthy Frank character during his time on his DizastaMusic channel, where he created sketch comedy-based content. The channel started gaining popularity once he conceptualised Frank, who is described as the anti-vlogger of YouTube.