Mule

Definition

Something in the game that is used solely as a means for delivery of goods and services. May refer to one of the following variants:

Mule Accounts - Paid game accounts that are not actively played. Mule characters may exist to pad Supergroups for Prestige, to hold items, or to start Task Forces with less than the required team size.
Set Mules - Powers in a build that are taken and slotted, but never used. Their chief function is to serve as containers for Set Bonuses.