Action Comics Vol. 1 (1938-2011; 2016-) #238

Argumento

Jimmy summons Superman to Africa with his signal-watch when he encounters a gorilla with super-powers. Superman deduces that the giant ape is from Krypton, and later it sacrifices itself to save Superman from Green Kryptonite, revealing that it was really a Kryptonian human accidentally transformed into a gorilla.