ZeedOmegamon is a superior form of Omegamon (fandmade, of course) and made his first appearance in a short story that compliments the main fic Alphamon´s Challenge
and in fav.me/dabd0w2. Hikari Yagami helped Nova fight against Alphamon by miraculously summoning ZeedOmegamon in the astral realm.
Eventually , in the fic, Tia Yagami fav.me/dad2jfv and Miyako Ishida fav.me/daekvzq ( Taichi and Yamatto´s reality 12 counterparts) accessed Zeed´s data as well and were able to make their Omegamon evolve into ZeedOmegamon. They will also pass the knowledge to Tai and Yamatto as well.
ZeedOmegamon , in the fic, shares a direct bind with the Homeostasis.
Anyone is free to use this design , carpe diem!