Abigail "Abby" Archer is the main protagonist of the Canadian animated series Grossology. She is a teenage girl who attends Ringworm High School, but she also secretly works for the Bureau of Grossology, a government agency where she unravels mysteries so disgusting that no adult will touch them. Despite being cute and tomboyishly beautiful, she loves everything gross and slimy – nothing grosses her out. Abby likes to test her limits to see if there is something so gross, so slimy, so disgusting, that it will make even her, the Queen of Squeam, turn green. So far nothing has come close.
Although she closely resisted gagging at gross sights on a rare number of occasions, such as in the episodes "The Slim Slime Man" and "Go Fish", the only exception was in the episode "Yack Attack", when she unknowingly drank contaminated water and threw up. She gets covered in slop the most, and being dirty has yet to affect her trademark ponytail. On the field, she is a competent fighter. She holds a severe grudge against not only villains like Lance Boil, but her gorgeous school rival Paige. Unlike her younger brother Ty, she is athletic and depends on her instincts and feelings at times, however sometimes her feelings cloud her judgment when she has an affection for the suspect in question.
Throughout the series she has shown interest in drama and sports like volleyball. She is scared of leeches as shown in the episode "Vein Drain". Abby and Ty share ownership of their kitten, Hairball. She also tried out for the volleyball team at the goading of her father Harvey, who wanted her to live his dream through her. She might have a slight English accent. There were hints that she may have had a small crush on Kid Rot in Episode 13, "Kid Rot" but this crush ultimately ended after they became enemies.