Each of the threat reports come with a nice piece of color art of the character embedded in the PDF and a separate Hero Lab file. Each includes a prop cover letter from AEGIS, possibly useful for setting a scene, that gives a basic idea about what is publically known about the character described. Each character is given a few plot hooks to help work them into a campaign.
Sleepwalker (#28) is an unusual character, just a normal librarian by day, but when she sleeps, she changes into a superpowered being -usually a different one each night- that act upon her deeper impulses which usually causes trouble. Because of the characters flexibility, multiple superpowered forms, and usual background there are a quite a few stories that can be told with Sleepwalker - though a sample dreamform or two would have been helpful.
Disclosure: As a featured reviewer for RPGNow/DriveThroughRPG, I received my copies of these product for free from the publisher for the purpose of this review.