Universe: AC (After Colony)
Series: Wing Gundam
Pilot: Zechs Merquise / Milliardo Peacecraft
Appeared in the anime? Yes
Though this MS appeared in the anime, this MG version isn’t exactly what you saw if you ever watched the anime. IMO, this should’ve been called Epyon II since it’s technically is. I don’t know much about its history on how it was used in Frozen Teardrop, the manga where it originally appeared.