Patricia "Patti" Mayonnaise is a main character in the Nickelodeon/Disney animated series Doug. She is the only daughter of Chad and the late Mrs. Mayonnaise.

== Appearance == This character card focuses on her original Nickelodeon self. She's 11–12 years old, stands at 4'9" (145 cm), and weighs approximately 80 lbs (36 kg).

Patti has tanner skin and curly blonde hair. She mostly wears a blue long-sleeved shirt with pink polka-dots and pink trim, a navy blue short skirt, white socks, one of which is slightly shorter than the other, and pink and white sneakers.

== Personality == Patti is a very nice and friendly girl. In her first appearance and interaction with Doug, she’s shown to be forgiving to him when he attempts to apologize for squirting ketchup all over her (it landed in her burger). Patti is considered to be one of the nicest characters on the show.

However, she’s far from perfect, as she’s also impolite at times, particularly when she's hungry, and is prone to lose her cool if pushed too far. She also won't stop bragging when it comes to finally winning a game, as seen in "Doug Clobbers Patti".

Nevertheless, she’s generally a kind and supportive friend and is not afraid to step in if one of her friends is being bullied.

== Hobbies == Not only is she an ace student, but Patti's also an accomplished athlete and good at anything to do with physical activity, in particular ballet, bowling, weightlifting, baseball, and basketball; and on top of that, she's a pro at the beet-centric sport Beetball. Speaking of baseball, she’s the Pulverizers' best batter and pitcher. She also has a very strong competitive trait, especially when it comes to sports.

== Trivia ==

• Her competitive side can be likened to that of Lynn Loud from "The Loud House". Both are proficient at a lot of sports, but Patti's not as competitive as Lynn, of course.
• For all her talents, she can’t cook, nor sing, though she has performed The Beets' "Killer Tofu", as seen in "Doug's Secret Song".
• She appears in "Doug's Big Game" as an unplayable character that Doug has to find.
• She has a guinea pig named Hamlet.
• Patti has a croaky Southern drawl because Constance Shulman, her voice actress, is a Tennessee native.
• Patti's favorite color is blue because of the color of her shirt.
• Patti wears a swimsuit with blue and pink polka-dots in the same color as her shirt.
• Patti used to have a darker complexion, but this was later changed to a lighter complexion in the Disney version of the show.
• The baseball team "Patti's Pulverizers" (shown in "Doug Out in Left Field" and "Doug on First") is named after her.

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