From the back cover:
Evil Within Your Grasp
As every Champions fan knows, you can never have too many great villain! But with so many Champions books in print, sometimes it's hard to find just the villain you're looking for without a lot of page-flipping.
That's where Evil Unleashed comes in. It saves you the effort of carrying a lot of books to the gaming table and the time needed to look through them for the particular villain you want. It collects the villains from nearly a dozen supplements --
Champions
Champions Battlegrounds
Champions Universe
Millennium City
Sharper than a Serpent's Tooth
the Ultimate series
Until
Vibora Bay
Villainy Amok
and puts them between two covers so you only have to refer to one book when you're searching for a superpowered bad guy. And for a little added fiendishness Evil Unleashed includes five all-new villains: the supervillain team Mech-Force 1; the mysterious demonsouled supermage Josiah Brimstone; and Vixen, a swift and seductive cat burglar with other goals on her mind than just robbery.
So you'd better make sure your heroes out on patrol tonight keep their eyes open! Some evil's about to be unleashed on your campaign...