Originally in Ending the allies moved by themselves and everyone complained that they didn't like it. The issue comes from the fact that it has nothing to do with your actions - it's just something going on that you have no control over.
If something did act independantly of you, it would also need inverted behaviour when converted. That's kind of hard to imagine, unless the whole point is that you only control it when it's an enemy. Which could be interesting I guess.
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I will consider a bestiary, but it's far more work than it sounds and not fun to work on.