Thanos was a warlord from Titan.
Alternative versions of Spider-Man - Wikipedia
Thanos (Earth-199999), Stan Lee Cameos Wiki
Peter Parker (Earth-199999), Wiki
Marvel Cinematic Universe Timeline - BIBLIOGRAPHY - Wattpad
Spider-Man (Earth 199999), Wiki
Marvel fans go to war over recasting Guardians 3's High Evolutionary actor as Kang
Captain Marvel (Carol Danvers), Characters
Marvel fans go to war over recasting Guardians 3's High Evolutionary actor as Kang
Could Thanos have snapped the Infinity Stones out of existence to ensure no one could use them again? - Quora