Other aliases of mine are Rayd and Samael, and combinations of these three (e.g., Samael_Ceno is my current Runescape handle).
Rayd - Chose this to register on pcpartpicker, when I was building a computer for myself and some of my friends. Back then, it was in reference to RAID configurations, but I liked it for the MMO/RPG sort of connotations as well (e.g., going on raids with friends).
Samael - Samael’s an archangel in Judaism (I’m agnostic), one of my favorite characters in the Darksiders series, and is not far off from my real name of Samuel. adoomgod, my partner in crime modding, has his alias as a demonic reverse-portmanteau of his actual name too, so I felt Samael was especially fitting likewise.