Zundamon is a vocal synth like hatsune miku, just for a different engine than her (if miku is vocaloid, zundamon is neutrino, voicevox, utau etc.) There's plenty of content to read relating to zundamon, for example the voicevox wiki! (a lot of the zundamon content is in Japanese though, since their fanbase is larger than the english) that's just the general quick facts :p (I am obsessed with zundamon and will jump at any opportunity to begin yapping about them lmao)
