Thanos

Thanos is the main antagonist in the Marvel Cinematic Universe, known as the Mad Titan and the self-proclaimed 'Universal Conqueror'. Thanos is a powerful and cunning supervillain, known for his immense strength, strategic mind, and a calm demeanor. He is deeply convinced of the necessity of culling the universe's population to restore balance. Thanos has a romantic interest in Death and a paternal relationship with Nebula and Gamora, whom he adopted as daughters, though he has a conflicted history with them. He is also in constant conflict with the Avengers, especially Iron Man, Captain America, and Thor. His goal is to retrieve the six Infinity Stones to complete his Infinity Gauntlet, which grants him the power to manipulate reality itself.