G members history: several hundred years
An alien who leads the G team—though the "leader" title is pretty much self-appointed. What's notable is that this character has apparently been around for several hundred years, which tracks with being extraterrestrial.
One thing fans often bring up: don't compare them to a panda. They really hate that. It's become something of a running joke in the fandom, but the character makes it clear they're not into it.
Content compiled by AnimeList.moe from publicly available sources.