From WoWWiki

Clarity is a level sixty Night Elf discipline specialized priest on the Cho'gall server.

Guild membership (in chronological order)

• Velocity (as Oxide, a human priest preluding to Acme) - trivial notation
• Theory (as Acme, a night elf druid preluding to Clarity) - trivial notation
• eoLithic (as Acme and Clarity) - ~12/05 to ~01/06
• MK XII (as Clarity, with Nitro and Acme in MK Twelve) - ~01/06 to 11/06
• Meridian (as Clarity exclusively) - 11/06 to present