Mia Mersion is a distinctly British "chavette" with a tendency for petty crime. She references anything from old British films to ads. She dresses up like Alex from Clockwork Orange to inflict chaos and ultraviolence on the city.
She came to Los Santos with her brother, Mikey Mersion and often has cousins in town.
Best known for 'battering' police with her bat, Mia is a con artist with an interest in the police department. She was often seen flirting and collecting numbers of any member of PD she could.
Herself and Ryan Parker were often able to rob Fleeca Banks and convenient stores without hostages, due to the cons they put together.
Colombo and her began dating after he was kidnapped by Reid Dankleaf and forced to take crack. She helped him with his detox. After a quick romance, and intense dates (fighting sharks) Rocko proposed at the top of Mount Chilliad.
Mia was also being stalked by Ander Destolle. This caused a hardship within her and Rocko's relationship as she felt she was being treated like a child and was constantly told to "stay safe".
- Mia has a fear of the Southside after she was kidnapped and stabbed by Ricky Robins during a pawn run.
- Mia doesn't eat meat anymore after eating a chili with human flesh. Garfield Henderson a cannibal had made it for her while she was in prison.
- "I'm bangin a detective!"