Now, it doesn't have it 'out of the box' but using an event to swap characters could do it, could it not? If you created an identical sprite look, but with the actions you mention, I believe this could work... It does, however, sound like a lot of work, but could very well be a nice addition to a project.I'm sure he is referring to the behavior sprites, not emo face-sets. He referred to sprites twice, and referred to "default" behaviour sprites... which RM does have (Frozen, nodding, playing a lute, dying etc).
Regardless... RM doesn't have either of those features.