He was portrayed by John Colicos from August 10 , 1981 , to September 18 , 1981 .
Mikkos Ivanovich Cassadine is a fictional character on the ABC soap opera , General Hospital .
Mikkos Ivanovich Cassadine was portrayed by John Colicos from August 10 , 1981 , to September 18 , 1981 .
Mikkos Ivanovich Cassadine is a fictional character on the ABC soap opera , General Hospital .