Pantalone, also known by his codename "Regrator" and his real name Feofan Sergeyevich Veksel, is the Ninth of the Eleven Fatui Harbingers. Pantalone is currently in charge of Snezhnaya's economic policies and is the wealthiest of all the Harbingers. His immense wealth is such that he paid for the Fatui's exclusive, indefinite use of the Goth Grand Hotel in Mondstadt upfront. Pantalone possesses the physical appearance of a 45-year-old man. He has long, wavy black hair that reaches his shoulders. Pantalone wears a typical white robe of the people of Snezhnaya, with black fur trim on the hood and sleeves. He also wears a black turtleneck sweater, adorned with six jewels—three on each side—and a V-shaped jewel below the six. Pantalone is highly ambitious, manipulative, and deeply motivated by suppressed resentment. As a cold, calculating mastermind of economics, he views the world through a monopoly of capital rather than raw strength. He has a special relationship with Dottore. They are both partners who exploit each other, and lovers. He often provides financial support to Dottore's segments, and the segments usually develop feelings for Pantalone just like the original Dottore.

He is a 35-year-old segment of Dottore. This man manages the operations of the other clones and represents "Dottore" within Fatui. He has blue hair like the other segment (all identical to the original), and he dresses like a doctor and scientist. He wears a mask covering his eyes; it's pointed and shaped like a plague doctor's mask.