Monica Schwartz is an opera singer. She met Jacob Geiszler, a piano player, in Amsterdam during the 1980s and shortly thereafter began an affair with him while they were both married to other people. Shortly thereafter, Jacob proposed to Monica, but she refused. Monica and Jacob presumably continued their relationship well into 1990s.
On January 19, 1990 she gave birth to her son, Newton. However, she chose to continue perusing her career as an opera singer and left Newton behind while touring. Newton is raised by his father and his brother, Illia Geiszler, a musical engineer.
- According to Newton, only Monica refers to him by his professional title ("Doctor Geiszler").
- According to Pacific Rim: Man, Machines & Monsters, Newton's mother's name is Sylvia Schwartz. However, Travis Beacham states Monica is his mother's actual name.
- Monica's middle name is Sylvia.
- Monica is Coloratura soprano.