Who is Tony Polar from Valley of the Dolls and what is their importance?

Tony Polar is a popular singer and musical genius. His career is managed by his sister because he is mentally challenged, and only has the mental abilities of a ten-year-old, but nobody knows. He is sexually attracted to Jennifer and has to be lured into marriage with her. After the couple conceives a child, Jennifer aborts the baby, but only after learning that Tony's condition is inheritable. Tony eventually ends up permanently institutionalized at the same clinic that treats Neely O'Hara.