Thanks, everyone! Galidor is definitely a bizarre building system, for sure but its got its quirks. I think you could say that it's because of the heavy criticism of the system that we've had so many fun new Galidor mocs recently, and I'm hoping to see some more of them.
Just a standard half pin. The sockets are deep in Galidor pieces but you can use a snug bar piece to remove them most of the time. Fortunately, on that specific part of the Shimmel torso, the hole goes all the way through to the other side, so you can also push it out from the back.
Thanks! I find naming and writing for my characters difficult so I'm happy to hear it worked out in the end