hello and welcome to my headcanon/au where bruce has DID, and batman manifests as a protective alter who also just happens to be the most badass superhero ever
his #1 job is to protect bruce, but over time that extends to protecting others from the same traumatic events they had to go through as a child. Along with being physically strong enough to defeat the “bad guys” in bruce’s life, batman is also emotionally tough (sometimes to a fault), and insanely cool in a way child bruce could only hope to be. Even as adults, bruce still continues to think batman is the greatest, and both will boost each other’s egos by bragging about how rad the other is.
this entire headcanon is supported by the fact that bruce and batman switch a bunch of times in this video, and each time their attitudes and tone of voice changes like pls,,,