 Sagard the Barbarian

Sagard the Barbarian is a series of four Hero's Challenge Gamebooks written by Gary Gygax, co-creator of "Dungeons & Dragons" and Flint Dille, screenwriter ("", "") and game writer/designer ("Dead to Rights", "").The four books star the eponymous hero Sagard the Barbarian, and are titled "The Ice Dragon", "The Green Hydra", "The Crimson Sea" and "The Fire Demon".