It sounds like it's from the show, but it's just a Manhunter unit that completely ignores the setting in the movie.
Oh? What's going on with the model kit...?
GM III: "Hello. I'm the GM III Manhunter specification. It's a long name, so I'd be happy if you just called me GM-san."
Mesa: "Since it's GM 3, I guess I'll just call you GM-san."
GM-san: "If you say anything more, I'll turn you into a lump of flesh."

GM III: A unit belonging to the Earth Federation Army's Anti-Immigration Operations Group. | めさ's Gunpla works