Thanasis Bebis was born in 1929 and was to Greek football in the 1950s what Mimis Domazos became in the 1960s: second to none in technique, precision and flexibility. He played mostly in the midfield but also, at times, in the front line. Bebis started his career at Akratitos Petralona moving to Fostiras FC in 1946. In 1949, he made the big jump to Olympiakos Piraeus. He would stay with the red-whites for nearly two decades before moving on, in 1963, to Vyzas Megara as a player/coach. At Vyzas, he ended his playing career.
As a player of Olympiakos, between the years 1949 and 1963, Bebis won:
- The League title: 1955, 1956, 1957, 1958 and 1959
- The Greek Cup: 1953, 1954, 1957, 1958, 1959, 1960, 1961, 1963
- The Piraeus Championship: 1954, 1955, 1956, 1957, 1958 και 1959
- The Balkan Cup: 1963
During his career he was capped 17 times by the National Football Team of Greece scoring 1 goal, the matchwinner in a World Cup qualifier against Isreal.
Besides Vyzas, Bebis coached Olympiakos in 1980, 1984 and 1985.