RX-79[GS] Gundam Ground Type-S
Apparently, it's full name in the hg box is RX-79[GS] Gundam Ground Type-S [Gundam Thunderbolt ver.] Yeaaah... anyway it doesn't have a wikia or a gundainfo page. It's basically a ground type gundam in the Gundam Thunderbolt with Thunderbolt aesthetics such as the mini arms, moar shields and more verniers.
I saw it doing this pose on the hg version so yeah. no battle image but it is very capable of poking people with its rose spear thing.