Inmates

Inmates are villains who are/wereimprisoned yet manage to keep some measure of power within their respective prisons and pose a threat to said prisons themselves. This type of antagonist is common in fiction dealing with prisons and goes hand-in-hand with the relatedgaolers.

This is also the place to putgangs and their members which were similar to street gangs, but worked primarily within prison confines (bothfictional andreal).

Good examples include most villains from theBatman franchise. Also,Lex Luthor,Black Mariah,Wilson Fisk,Loki Laufeyson, andKnull are prime examples of what to expect from these kinds of villains.

Editing note: Please only include characters who were in a prison and had some degree of power within these confines (Gangs orCrime Lords who functioned mainly behind bars). They are not characters simply imprisoned with no effect on others.