Makkari is the son of Verona and Mara, born in Olympia, capital city of the Eternals of Earth. He is a member of the Eternals' Technologist's Guild and is skilled at designing and building high-speed vehicles. Makkari has involved himself in Earth's affairs more often than most Eternals. Under the name Thoth, he taught writing to the Egyptians. He was taught philosophy by Plato. He rescued Sersi from Nero's Fire. He spent some time as the charioteer of Darius I of Persia. He witnessed the Trojan War, the reign of Vlad the Impaler, and the Alamo.