Soccer player who commonly goes by the nickname Nikos and who's known for his work as a left-handed forward. He's played with Belgian team K.R.C. Genk and been loaned to PAOK FC.
He signed his first professional contract at the age of 15.
He competed in the Greek Cup in 2014.
HIs father was also a pro soccer player and got Karelis started in the sport at the age of six.