Go for something that's another language or unique names that express your personality.
Like my game usernames:
Amaterasu which means "Sun God" in Japanese (?)
But that one's kinda used too much so,think of others.
Like my AQW Username:
SOULEXCALIBUR
i was a fan of SoulCalibur and guns so that really expresses me.
plus it's changable,and i actually had alts (Now inactive)like:
SOULEXGEN
SOULEXWOLF
Very interesting topic if i might say..