The Fearsome Five is a group of villains gathered by Doctor Light to defeat the Teen Titans. The founding members were: Doctor Light, Gizmo, Shimmer, Mammoth and Psimon. Psimon took the lead after Doctor Light was defeated by the Titans, and broke Jinx and Neutron out of prison to add them to the team - Jinx stayed with the team, but Neutron did not.
After Psimon's apparent death in the Crisis, The Fearsome Five encountered Superman with a new lineup: Mammoth, Gizmo, Shimmer, Charger, and Deuce. The team disbanded shortly after that.
Sometime later, Psimon returned from certain death and systematically sought revenge on his former teammates: Gizmo, Mammoth and Shimmer. Mammoth barely survived although his sister Shimmer seemingly perished. Gizmo later resurfaced alive. Doctor Sivana gathered the team - Psimon, Mammoth, Gizmo and Jinx - and was able to successfully restore Shimmer to life. The revamped Fearsome Five is a deadly team, if they can keep from killing each other!
- Doctor Light
- Deuce and Charger
- Doctor Sivana