Dinah Marler is a fictional character from the soap opera Guiding Light, which aired from 1937 to 2009. She is known for her complex personality and dramatic storylines, often involving family dynamics and romantic relationships. Dinah is the daughter of Harley Cooper and Gus Aitoro, and her character has evolved significantly throughout the series. Throughout her time on the show, Dinah has been portrayed as both a villain and a heroine, showcasing her ability to navigate various challenges. Her relationships with other characters, such as Alan Spaulding and Matt Reardon, have contributed to her development and the overall narrative of Guiding Light.