Fan Casting Would Harm a Senior in Sort by Tropes

While seniors are usually exempt from harm due to harming the elderly being a taboo, there are exceptions. A villain hurting a senior is practically guaranteed to be a Kick the Dog moment at minimum. Whether a hero hits a villainous senior depends on how healthy they are, how dangerous their scheme is, and the hero's morality. An elderly villain who's clearly in good shape is more likely to get attacked by a hero, a villain that plans on killing someone is also likely to get hit if there are no other options, and an Anti-Hero might not care at all if they're violent enough.