Thanos (Earth-2326)

"Life is a cancer... I am the surgeon come to cut it out."

- Thanos

Thanos is the last surviving Titanian Eternal who became a galactic warlord, hellbent on destroying life on a scale hitherto undreamed of, in order to impress the Goddess of Death, Hela.

Trivia

 * Thanos's quest to collect the Infinity Stones was inspired by Hela herself, who once sought to collect the Stones alongside the Allfather, Odin.
 * Before claiming the Infinity Gauntlet and collecting all 6 Stones, Thanos had previously wielded the Mind, Power, and Space Stones on separate occasions.