Supervillains sometimes also form their own groups, but these tend to be short-lived because most villains simply do not trust each other. Most such teams are formed by a charismatic and/or fearsome criminal mastermind for specific purposes; an example is the Secret Society of Super Villains of which there have been several versions. Most villain teams are usually small, having been formed of individuals who know each other personally, such as the Central City Rogues, or have some other reason to work together (mercenary groups like the H.I.V.E., fanatical cults such as Kobra, etc.).