This account was a unique oddity. But ever since they took away the old user symbols, that's not the case anymore.
Apparently this account had a strange user symbol before it's name, for breaking Deviant Art. Or well hacking it.
So forgotten now. I'm the first commentor since 2014? Really? Geesh.
I miss the old username symbols.
~ for regular members
* for premium members
= for beta testers
` for senior members
^ for Community Volunteers
$ for staff members
# for groups
! for banned/deactivated accounts
@ for MNAdmins
^ for gallery moderators
(C) (Copyright symbol) for the Copyright Enforcement Team
- for Yay-I-Broke-It