Home › Words › M › miitubermiitubermiituber means A youtuber that who uses a Mii character to represent themselves in their videos.EtymologyCombination of Mii and PNGTuber or VTuber.nounA youtuber that who uses a Mii character to represent themselves in their videos.Definitions & examples from Wiktionary (CC BY-SA 3.0).