Imagine a small group of guardians that have decided to explore an abandoned city on Pluto.
They have just been ambushed by a large group of unknown enemies and are now struggling to take them out.
I swoop in (wearing all black) and save the day by taking out dozens of enemies with my bare hands.
The guardians surround me and a random guardian asks, "Who are YOU?"
[spoiler][b]I'M BATMAN[/b] *vanishes*[/spoiler]
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The voice of 343 Guilty Spark, which includes the occasionall raise on voice, because 343 is a robot, and so is an Exo. I will be an exo. Because why not.