WOOHOO LONE WOLF!!!!

It's probably the best gamebooks around!

I have the complete Kai and Magnakai series, some of the Grand Master series, and just one of the New Order. Also have some of the "Legends Of Lone Wolf" novels;
Book 1 & 2: Eclipes of the Kai and The Dark Doors Open
Book 7: The Birthplace
Book 9: The Tellings
Book 10: The Lorestone of Varetta
Book 12: The Rotting Land

those are real gems IMHO, really flesh out the characters