According to Soap Central, when Heather Webber first arrived on the scene, back in 1976, she was played by Georganne LaPiere. Mary O'Brien took over in 1977, followed by Robin Mattson just a few years later. Although Heather has been portrayed by many different actors, Mattson is most widely associated with the character, having played her on and off for decades.
Taking advantage of Dr. Jeff Webber's (then Richard Dean Anderson) dismay that his wife, Monica (Leslie Charleson), had cheated on him with his brother, Heather lured him into a one-night stand and fell pregnant. Initially telling Jeff the baby had died, she eventually revealed the truth, but he didn't want to be with her — not even after Heather faked suicide.
She even sold their child on the black market, ultimately finding out it had been adopted by Peter and Diana Taylor (Craig Huebing and Brooke Bundy). Heather then convinced Jeff to marry her, an arrangement that unsurprisingly didn't last long. In an attempt to get the baby back, she laced Diana's drink with LSD, but got the glasses confused and accidentally drank it herself, causing Heather to go insane.
Because of this, Jeff had Heather committed to a psychiatric care facility, per Soap Hub. It was because of this that the already unhinged Heather descended into madness. In and out of sanitariums over the years, Heather continued down her villainous path, engaging in kidnapping, assault, deception, and murder, to name just a few.
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