It's... there's a long story behind it. He's well-known in my world. Famous. About ten years ago, he started running with heroes like Batman. Called himself "Robin, the Boy Wonder," and it's just gotten worse since then.
[He pauses, to let that sink in, to let Steve react. He has an entire backstory lined up, but it won't have any effect if Steve can't hear it over his own thoughts.]
Voice;
[The mirror, perhaps.]
It's... there's a long story behind it. He's well-known in my world. Famous. About ten years ago, he started running with heroes like Batman. Called himself "Robin, the Boy Wonder," and it's just gotten worse since then.
[He pauses, to let that sink in, to let Steve react. He has an entire backstory lined up, but it won't have any effect if Steve can't hear it over his own thoughts.]