blindVigil said:
As far as I know, the Digimon Gaiamon doesn't even exist. It's mentioned by name in a single game, but never makes a physical appearance there or anywhere else. In fact, the Digimon literally just doesn't exist at all within the series. It only exists conceptually as something that could exist as part of Digimon World 3's story.
I don't think there's any reason to have a separate tag for something that outright doesn't exist.
OK, let me explain.
Digimon is an extremely unorganized franchise.
We literally have official Digimon that we only have the name, Gaiamon is just one of them, other examples are: Earthdramon, BesoBombmon, Danmon, Kandoushichaudamon, Nikkorimon, Zombiemon, PunchNarabimon, Huntermon, MirrorBallmon, Okunimon, KitaKitsunemon, Kyukanchoumon, JikoTyumon, CheerGalmon, Urashimamon, etc.
Some of them only appears in Drama CDs, some of them are straight up confirmed to be canon from Bandai Namco but never got an official art, the fans often make fandesigns for them so the tag can be used to refer to these fanarts until BN hopefully make official art for them.
The reverse also happen, we have official art for some Digimon that don't even have a name, the biggest example is Meicoomon's pre-evolutions:
https://wikimon.net/Meicoomon%27s_Unnamed_Child_Form
https://wikimon.net/Meicoomon%27s_Unnamed_Baby_Form
The later even appeared in the last episode of Digimon Ghost Game but like I said before, these two Digimon don't even have a official name!
In summary, being a Digimon fan is suffering.