All of the pregens from the back of adventure paths 25+ are available, along with most of the statblocks from the companion line. (The pre-gens from adventure paths 1-24 are available in the d20 game system in HL, since they were written with 3.5 rules).
Please try Hero Lab out in demo mode - you won't be restricted from opening up the adventure path pre-gens while you're in demo mode, and you can see what's available. You can download the demo at
http://wolflair.com/index.php?context=hero_lab.