Thinker

Sinker (シンカー) is one of the 10,000 players of the cursed death game «Sword Art Online». He is in charge of the popular net gaming information site «MMO Today» and also formed SAO's largest guild «The Army». He is trapped in the dungeon under the «Black Iron Castle» by a faction leader named Kibaou. He is later rescued by Kirito and Asuna in during the Morning Dew Girl arc events after he was thrown into a hidden dungeon. He appears again for the SAO clearing party along with Yuriel.

After returning to the real world, he marries Yuriel and redesigns his site and transforms it to MMO Tomorrow, an information site focused in VRMMO in general, including news and events held in each one individually.