DC Comics vs Honkai Impact 3rd
Connection:
Both gloomy, dark, depressed, and vengeful orphans wearing black caped suits taking their names after flying animals (a bat and a raven respectively)
Both started off as young happy with their families until tragedy struck and they never saw them again (Bruce's parents were killed by Joe Chill and Natasha was taken away from her brother by Grey Serpent after the Second Eruption), this experience caused them to be cold and bitter as they detected themselves with a vengeful goal to prevent a similar situation from happening to anyone else (Bruce vows to fight crime and Natasha vows to destroy the Honkai)
Both trained until adulthood using their combat skills in battle however despite their coldly nature they have a soft spot as they become adoptive parents to major children some of whom would grow up to start their own careers as heroes (The Robins and the Roost kids respectively)
Both planned against god-like foes with many weapons designed to beat or kill them, both also joined major organizations (Justice League and World Serpent respectively), where they become close with one of their members (Superman and Raiden Mei respectively) who they also fought multiple time before
Both are also owners of major businesses (Wayne Enterprises and Cioara House respectively)
However in contrast they are also opposites, Batman was born in a wealthy family was rich while Raven only lived with her brother and doesn't have a rich status. Batman is a superhero who fights for justice while Raven is a villain part of a terrorist organization, although she would redeem herself later on.
