it was an earlier generation gundam.

looking at the part where the overflags get shot up, i keep thinking, DAMN those mechs look good! really, i hope Graham becomes a "good guy" but keeps the Flag... maybe tweak it a bit more.

btw, there's no reason more Gundams won't appear but that'll probably be in season 2. Also, is the Throne Ein actually part of CB? i was rewatching the beginning and now i'm not so sure.