Big Brother/Sister Bully
Older siblings as bullies towards their younger siblings as well as others. However, if the victim in question is an Annoying Younger Sibling towards them, the work may use this as an attempt to justify it. In some works, maybe the older sibling was compared by their parents, or their parents care more about the younger siblings.
Related tropes: Kids Are Cruel, Teens Are Monsters (because the big sibling is often a teenager as compared to the younger more sympathetic protagonist). If one child is abusive to their parent, rather than sibling, it's Abusive Offspring. A Big Brother Bully who has been Promoted to Parent might, functionally, b...read more