Doctor Abigail Finn is an expert monster hunter and gifted biologist and technologist in the 2003 TV series.
Dr. Finn has had a show called the Monster Hunter, in which she would try to hunt for monsters, along with her ball shaped SORTIES and her assistant Parker. However, not many people take her seriously and her desperation to find monsters made her deranged.
When Casey Jones' neighbor videotaped Michelangelo in his backyard (luckily the footage was quite vague), Finn came to Jones Farm to locate the monster and capture it. Mikey and Donatello try to retrieve the tape but accidentally get in the trap but get out before Finn could identify them. Along with Casey, they later disguised themselves as the famed Green Man to scare off Abigail but coincidentally, the Green Man was real and Finn captured it and alerted the press. But the Turtles were able to swap the Green Man with a disguised Casey and retrieved the tape. When the press arrived, Casey accused her of harassment as a result, her reputation was ruined.
- According to the original casting sheet for the episode, her given name was originally "Ellen".