It’s just like the old Rogues Gallery supplement for AD&D, but done up for Labyrinth Lord/Advanced Edition Companion. A whole bunch of pre-generated characters for you to use as you see fit, as PCs or NPCs. Maybe these folks are hirelings. Maybe they’re antagonists. Or maybe you just need a quick replacement for a character who failed a save vs. poison. In any case, have at them!
Groups By Class
Also, I’d love to hear what you wind up doing with these characters. So if you do use them, please consider dropping a note in the comments to let me (and the rest of the world) know what kind of trouble these folks get into in your campaigns.