Born in Bistriţa, Romania, Kreanga started to play table tennis at the age of 7. His first coach was Gheorghe Bozga, who would later discover Mihaela Steff.
While in Luxembourg, he received an offer to play in Greece, so he decided to move there. Being a minor, he quickly acquired Greek citizenship, and changed his name to Kalinikos Kreanga.[3]
He has been one of the dominant European table tennis players since the beginning of the 1990s, and uses the shakehand grip to hold the racket. His favorite offensive weapons seem to be the forehand topspin and an incredibly strong backhand topspin. His backhand topspin is regarded as one of the most devastating in the history of the game, not limited by its unorthodox technique.