This omnibus collects the first half of Marvel's comprehensive character profiles from the 1990s. The Official Handbook of the Marvel Universe: Master Edition was originally presented as loose-leaf cards for collectors, detailing heroes, villains, and teams. This volume covers entries from Abomination to Lyja the Lazerfist, featuring character designs and debut appearances for icons like Deadpool and Cable. The profiles are presented in alphabetical order for ease of reference.

This collection offers a deep dive into Marvel's extensive character roster as it existed in the early 1990s, catering to dedicated fans and collectors. The omnibus format makes these previously card-based profiles accessible and organized, presenting a wealth of canonical information. The inclusion of character art and the debut of key figures like Deadpool and Cable are highlighted as significant features. This volume serves as a comprehensive reference for a specific era of the Marvel continuity.