they're set pieces. animatronics at a theme park.
they won't interact or do anything but what the script says. they'll be there for the scene being and most likely f**k off until the next segment while you wade through alone, that's how games do it now. at most they will be AI roaming some area until they're killed or you finish. you probably will have to take care of them if that's the case, which i would be okay with if i had the smallest amount of control over them.
If, if, if, if...