Thanos

Thanos is the main antagonist of the short story series Joe the Great franchise. He is a member of the Worst of the Worst.

Personality
Thanos is a evil, ruthless, power-hungry monster who wants the book to rule the world.

Age

 * Thousand years old

Temporary Ownership of the Book
Thanos temporarily had the book, until it exploded, here is what he summoned with it via his Army:
 * Lions The Final Showdown: Part 1 and The Final Showdown: Part 2
 * Bears: The Final Showdown: Part 2

Original Series

 * Where It All Began (first appearance)
 * It’s Not Joe Problem
 * Joe the Great: Secret Of the Book

Magic Squad

 * Revenge of Annie and Thanos (first re-appearance)
 * Pointing the Blame
 * Living a Nightmare (dream)
 * The Final Showdown: Part 1
 * The Final Showdown: Part 2

Ultimate Magic

 * Finders Creepers, Losers Sweepers (first re-appearance)
 * Into the Multiverse
 * The Ultimate Evil: Part 1
 * The Ultimate Evil: Part 2

Superverse

 * Annie and Thanos Must Croak (first re-appearance)
 * Joegeance is Mine (flashback)
 * Chime After Chime
 * When Life Gives Lemons Sell Lemonade
 * Slicks for Pains
 * Throne to the Wind
 * New Chapter (past)

Alternate Counterparts

 * Thanos (Fred the Great)
 * Thanos (Goodbye and Farewell)