Superboy Vol. 1 (1949-1976) / Superboy and the Legion of Super-Heroes (1976-1979) #172

Plot

Superboy meets Yango, a gorilla from Krypton, who speaks Kryptonian and possesses the same powers as Superboy. Yango was sent from Krypton to Earth in a parallel ship by noted Kryptonian anthropologist An-Kal, who seems to have also believed Jor-El's theory of Krypton exploding. Yango metes out justice to poachers and the random warlord and Superboy establishes himself as The Super-Ape's ally.