i've used several usernames

decadentThrough: anagram of turntechGodhead that I used to make an instagram account (now deleted.)

emilydaemon: started off as emilyd (as emily is taken on most platforms). the d at first was something you could make up your own extension for, but later d was extended to canonically mean daemon, as in *nix system daemons

jornmann: keyboard gibberish which started as "jornnman" and then was balanced into "jornmann", which is a nice two sets of four character words.

i've also a couple other usernames I don't want to post here, but one of them comes from an MF DOOM lyric.