Alexander Vlahos was born in Tumble, Carmarthenshire, and later moved to Llantrisant, Mid Glamorgan. He is the son of a Greek father and a Welsh mother and is fluent in both Welsh and English. Vlahos played ice hockey from the age of eight to 18, representing the Cardiff Devils, Great Britain, and captaining Wales.
His passion for the sport began as a child after watching The Mighty Ducks, and Alexander Vlahos remains a fan of the franchise. He trained in acting at the Royal Welsh College of Music & Drama in Cardiff, graduating in 2009.
Alexander Vlahos (full biography) was very fluent in both Welsh and English languages, which are his primary languages. It is a strong possibility, that he also understands and speaks some other sign and international languages fluently but due to insufficient data, we are not able to describe it.