"Lyle Waggoner was a memorable colleague and co-star, but he was also a friend," Carter wrote on Instagram of her Wonder Woman co-star of four years, who has died at age 84. "His kindness meant the world to me when I was very young and just starting my career. Lyle and I last spoke in 2018 and I’m so glad we had the chance to catch up. We talked about how lucky we both were to be surrounded by such wonderful family and friends. I will miss you, Lyle."