I didnt know you could add the sentinels on mmd too. I guess I am not used to mmd as much as Eriot, since i thought there could only be used human bodies and shapes, so the possibilities are infinite, hah. There could even be a slime dancing and shape-shifting? Well, i heard slimes or blob like structures are hard as hell to animate… Sorry for the off-topic, but yeah…
Vortex00 
Heh you have 2 mini sentinels dancing with Riley. LOL
I didnt know you could add the sentinels on mmd too. I guess I am not used to mmd as much as Eriot, since i thought there could only be used human bodies and shapes, so the possibilities are infinite, hah. There could even be a slime dancing and shape-shifting? Well, i heard slimes or blob like structures are hard as hell to animate… Sorry for the off-topic, but yeah…
yeah you can animate whatever you want. similar to any 3D animation software.