Fullmetal Alchemist vs Metal Gear Solid
Connection:
Both are old superhumans with swords
Both wear eyepatches on their left eyes
Both are also once leaders of a group (Solidus was the 43rd president of the United States and leader of the terrorist group Sons of Liberty and Bradley was the former Fuhrer-President of Amestris and commander of the Amestrian State Military)
Both are also born and created by another person (Solidus Snake was a clone of the Big Boss and Bradley was Wrath created by Father in the 2009 Brotherhood series)