Theresa is one of the main characters of Class of the Titans. She is a member of the seven teens destined to defeat Cronus and is known as The Fighter. She is also the main love interest of Jay.
- Theresa is a descendant of Theseus.
- Theresa and Jay's voice actors, Kelly Sheridan and Kirby Morrow are well known for playing another couple, Sango and Miroku from the InuYasha anime.
- Jay and Theresa are considered the main couple of the series.