I've changed my username (again)! 0d_billie => h3x

It transpires that after the first time changing my username, I didn't learn my lesson about using a possible deadname in an online identity. Well, I changed my name in real life for the second time earlier this year, and now /u/deimos has helpfully changed it for me here. When I was at Uni, my friends and I had a long conversation about what our Matrix-style hacker names would be. I picked Hex back then, and it feels fitting to bring it back in some form now. So with that in mind: Howdy, I'm h3x :)

If you were a character in the Matrix, what would your super cool hacker name be?