| Please note the following:
— Nancy faking to be nice to Jeffy
Nancy Jeffy François is the abusive mother and archenemy of Jeffy.
She is an alcoholic, crazy, and abusive prostitute who abandoned her eldest son, Jeffy with Mario because she hated him for unknown reasons.
She also appears in a flashback of Jeffy's Sister Returns!.
Nancy at some point some point got married Jacques Pierre Francois and gave birth to Jeffy in a Porta Potty and gave birth to Feebee at some point she took her helmet away which caused her to die One year after Mario The Babysitter! when Jeffy got dropped off at Mario’s apartment as she left him after that through its not mentioned it is implied that she murdered Jacques Pierre Francois to get the money of his during the events of Jeffy's Parents!, Nancy comes to Mario's house to get Jeffy back after finding out that Jeffy was to inherit millions of dollars from his father, Jacques Pierre François, who had committed suicide for the sake of his artwork. Even though she beat up Jeffy and belittles him in front of Mario and Rosalina, Mario didn't care, while Rosalina is concerned. In the car, she hits Jeffy twice, until he jumps out of the car and runs back to Mario's house, Mario to let him stay with him. He also genuinely promises to stop annoying Mario and disobeying him (which he eventually breaks). Then, Mario calls the police on her, and she stops beating Jeffy before getting arrested for child abuse, prostitution, and "a bunch of other things". Mario then decides to adopt Jeffy and let him live with him and Rosalina, as long as he behaves. But Mario probably lets him stay because he feels bad.
Likes and Dislikes
- Drugs and Alcohol
- Not showering for two months
- Abusing Jeffy
- Committing crimes
- Jacques Pierre François (only for the money)
- Having no money
- Getting arrested
- Jeffy telling her that he does not like her
- Jeffy jumping out of the car and running away
- Jeffy refusing to stay with her
- When Does Bad Things Guy states that Nancy is arrested for "a bunch of other things", it is assumed that Nancy is charged with: Motor Vehicle Theft, Prostitution, Child Abuse, Child Neglect, And Child Abandonment. Her prison sentence is unknown, but due to Florida's laws about M.V.T, it'll be at least 10 years.
- Since she was arrested in 2017, she will get out of prison in 2027, assuming that she never escapes prison or any appeal happens. Currently she has 8 years of prison left.
- She will return in The SuperMarioLogan Movie! as the main antagonist.
- She is a gold digger since she only wants Jacques Pierre Francois soley for his money.
- She is one of the most hated characters in the SML series over what she has done to Jeffy in Jeffy's Parents! as lots of people care for Jeffy.
- Nancy has a set of tattoos on both her arms, and oddly enough if you look closely at her left arm you may notice a heart with what appears to be Jeffy written inside it, implying Nancy may have cared about Jeffy at one point.
- She is the only biological relative of Jeffy who is still alive.
- It is likely that Jeffy got his foul language from her. Mario and Rosalina even believed it was the case on Drawing Jeffy!.