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Okay but look, I think Bart might have DID (Dissociative identity Disorder) and here’s why:
Bart obviously has a lot of trauma, a lot more than a normal teenager should, even for superheroes, and it isn’t a competition, but a lot more than all his teammates (Tim, Kon, Cassie, etc.). He hides everything about him being upset about his past and trauma behind his fun persona that he named “impulse”. He may not have made the hero name but he made its personality.
There are a lot of moments where it’s him being super positive about a really negative situation, and we know he knows it. He realises it’s a delicate situation but he still smiles. I think he has a personality that physically doesn’t let him think badly about a situation that was created by his PTSD. GuyS