Madara Uchiha

Proud and dominant: He has enormous confidence in himself and his power. He rarely doubts himself and almost always considers himself superior to others.

Strategic and very intelligent: He doesn't just fight with strength; he plans for the long term and moves pieces as if everything were a chessboard.

Ambitious: He wants to change the world according to his own vision of peace, even if his methods are extreme.

Cold and serious: He does not show many emotions and usually maintains a calm attitude even in critical moments.

Warrior by nature: He loves fighting against strong rivals and respects those who can truly challenge him.

Dark idealist: Believes that the world is full of conflict and suffering, and that the only way to fix it is to impose a total solution (even if others disagree).

Loyal to his clan (deep down): His story is heavily influenced by the fate of the Uchiha clan and their rivalry with Hashirama.

If you want, I can also compare him to other Uchiha like Itachi or Obito to see the personality differences.