Norman Gunston's 1992 "Amigos Para Siempre (Friends for Life)" was a duet with Effie, a fellow comedic character portrayed by Mary Coustas.
1992 "Amigos Para Siempre (Friends for Life)"
(with Effie) Efthimia Francesca Stephanidis, better known as just "Effie", is an outrageous comedic character played by Australian actress Mary Coustas. 
