The character of Greg Foster was brought to life by James Houghton in the series premier on March 26, 1973.
He departed on April 21, 1976, and was replaced by Brian Kerwin, who aired from October 12, 1976, to March 30, 1977, when the character was written out for a few months.
Greg eventually overcomes his feelings for Chris when he falls in love with a woman named Gwen Sherman.
Instead, he tries to help lead Gwen out of prostitution, but her pimp uses physical force to pressure her into continuing to accept clients.
But married life proves too dull for Nikki; she takes a modeling job at a place which turned out to be a front for prostitution.
Greg is forced to take the case of a young man named Tony Baker who is accused of the murder, but evidence later points to Nikki.
Greg returns to Genoa City twenty-one years later with Liz, who is preparing to undergo brain surgery and admits to Jill that she was adopted.