From publisher blurb:
The Formidable Four, a team of superhuman villains forever changed by their alien abductors bent on spreading chaos and fear across the globe. The Formidable Four's vast powers and experience working together makes them a deadly team on the top of every law-enforcement group's most wanted list.
The Formidable Four PDF contains...
Detailed backgrounds on the team's history as well as for each team member
Plot hooks for involving the entire team as well as for each character
The tactics each member prefers to use
A collection of Supporting Cast characters that can be used to add more flavor to encounters with the Formidable Four
Maps of the Formidable Four's subterranean headquarters.
Fold-Up Characters of all four members of the FF included!