Black Bolt
Before the Inhuman king Black Bolt destroys the city of Attilan to release Terrigen Mist throughout the world, he sends his son Ahura away for Kang to foster. Black Bolt later releases a small amount of Terrigen Mist to activate Ahura's terrigenesis and activate his Inhuman ability. While Ahura is going through the change, Black Bolt asks Kang to save his son from the coming end of all things, which Kang agrees to on the condition that the son remain permanently in his care.