Dollars

Dollars, an online colorless gang, whose name is derived from "dala dala", the users would be "dalas", or Dollars. The Dollars were created by Ryugamine Mikado as a joke but later he discovers that the organization grows far beyond his original plan, and all the founders got scared of it and ran away, except for Mikado. Dollars continues to grow relentlessly, but Mikado still maintained it until recently, in Episode 10, where he used it on Namie Yagiri in the first ever mass gathering of the Ikebukuro Dollars, on April 16th 2010 in the anime.