Rieze

Rieze is a Half-Alv Sorcerer-Strategist and a member of the D.D.D in Elder Tale. She is one of the Drei Klauen, the ladies who act as Krusty's second-in-commands. Along with Henrietta, she acts as one of the leaders of the Akiba Raid Party during Operation Capture. Her Overskill is Chiron Tablet. Her real name is Celica Aizawa.

(Source: Log Horizon Wiki)