Kal-El (Earth-5171)

Kal-El was once a high-ranking member of the Kryptonian Military, serving as their prime xenobiologist, who, disguised as the scientist Phillip Kent, travelled to Earth in order to discover more about humanity so Krypton could later orchestrate a invasion on the planet and make it their base against the Protoss, their mortal enemies. After years working on a base on Coloraro alongside human scientist Carrie Ferris, Kal was forced to reveal his identity when a Kryptonian Sentry arrived at the planet and caused mass destruction, critically wounding Carrie in the process, who accidentally fell in Kal, abosrbing his alien DNA to herself. After continuing to orchestrate his plans, Kal grew with a change of heart and aided the Avengers, as well as Carrie, now known as Superwoman, to stop General Zod and Brainiac's plans, effectively becoming the new leader of Krypton and the hero known as Superman, inspired by Carrie.