Mae is portrayed by Kyla Drew.
Mae can be quirky and bubbly at times. She is a very supportive friend to Dawn and she often gets pulled into Dawn's shenanigans. Mae is sociable and quickly makes friends.
Mae was first introduced in Dawn Moves Out, during her sleepover with Dawn, which helps Dawn realize that it's time to move out to her own bedroom instead of sharing with her brothers. She reveals that she is afraid of balloons. Her parents are introduced later in Valentime's Day.
In Urban Legend Outfitters, Mae and Dawn are co-presidents of the school newspaper and she's upset when Dawn wants to publish urban legends like Pig Foot for attention instead of real news and important stuff. Dawn later apologizes to her after things get out of control.
Mae has been helping the quad when they need her. In Three Men and a Mae B., Nicky, Ricky and Dicky all think Miles is in love with Mae and Dawn figures out that he is Mae's boyfriend because they tell their mother and Mae was there to help them out. In She Blinded Him with Science (Bob), Mae helps the quads realize that it's okay to have things you can't explain like bad luck, and never give up on science.
Mae has helped Dawn get back at her brothers several times. In I Want Candace, when Dawn gets angry at her brothers for messing up her radio call, she enlists Mae to help torment her brothers. Mae helps communicate between Dawn and her brothers since Dawn doesn't want to speak to them. In Diary of an Angry Quad, Mae helps Dawn mess with her brothers for reading her diary. Dawn writes fake diary entries for the boys to read. Mae plays along and wishes her brother was old enough that she could with him as well.
While Mae tries to stick with the quads, sometimes she bails on the quads when times call for it. In No Ifs, Ands, or But-ers, Mae leaves The quad's garage for Madison's breakfast, saying that "mama needs some bacon." In A Brief Case of Popularity, Mae tries to defend the quads from getting bad nicknames but when someone calls her "suspender defender," she bails on them before the nickname catches on.
In Quad Court, Mae fights with her friend Molly after staining Molly's dress while playing with Dawn. The quads use the Quad Court to settle the disagreement and Mae pays them with delicious food in return. Later in Nicky Ricky Dicky And Sicky, Dawn bets that the "epic moment" will be Mae and Molly fighting. However, Mae bets on the quads and wins.
In Quadsled, Mae says that a lot of people consider her to be the "Fifth Quad" and she is willing to replace any of the quads who can't make it to the Bobsled competition. This backfires on her when each one of the Harper Quads gets nervous and asks Mae to stand in for them. She eventually takes a stand and helps the quads get the courage needed to face the Kramdens Quads in the competition. She concludes that her role as the fifth quad is to help them out in things like these.
Mae has her first fight with Dawn in Ele-Funk in the Room when Dawn's brothers encourage Mae to stand up to Dawn and tell her that she is pushy. This leads to a huge argument with Dawn and a break up. Nicky, Ricky and Dicky take it upon themselves to get Mae and Dawn back together but neither Mae nor Dawn is willing to compromise. After both the boys and Dawn break Quad pact to go to the concert, Mae and Dawn apologize to each other.
In Keeping Up With the Quadashians, Mae is shown to have a crush on Miles. In Ye Olde Hand Holde, Dawn asks Miles to go to the Renaissance Fair with Mae, making it their first official date. In I Want My Mae B. Back, Mae spends too much time with her boyfriend, Miles, making it almost impossible to spare time for Dawn. This causes Dawn to hatch a plan to keep Miles and Mae apart. After the quads success, Mae gets depressed wondering why Miles doesn't want to hang out with her. Dawn feels bad and tries to repair things leading to a series of misadventures. At the end, Dawn apologizes and Mae apologizes too for not spending enough time with Dawn and thanks Dawn for fighting to have her to herself.
In One Quadzy Summer, Mae and Dawn get a summer job at the Boulderly Hills Country Club Kids Only Beach Club, BHCCKOBC. Mae is assigned to be the hostess.
Mae graduates from Edgewood Middle School along with the Harper Quads in "Cementing the Quads' Legacy." They join Rothschild Prep high school but the quads accidentally sink the entire school in "Dude, Where's My School?." Mae is really disappointed to lose the school because she really loved it. Mae and her friends are forced to join Boulder Academy as their new high school.
In Wrestle-Mae-nia, Mae almost breaks up with Miles because of the Harper Quads interference and miscommunication. During a girls' night at Mae's house, Dawn takes Mae's phone away so that Mae doesn't spend all the time talking with Miles on the phone. Unfortunately, Dawn accidentally butt dials Miles while Mae is telling them that Miles is a "softie." It goes to Miles' voicemail. Mae doesn't want to hurt Miles if he finds out that she called him a softie. So, Dawn offers to fix by working with her brothers to delete the voicemail before Miles gets it. However, in the process, the boys overhear Miles saying that he doesn't like Mae's cat, Debbie. They assume that he's saying he doesn't like Mae. So, the quads interfere as usual to fix things but it gets out of control. As usual. They end up concluding that Miles wants to break up with Mae. Dawn tells Mae about it and Mae plans to break up with Miles first. Luckily, the quads eventually figure out that Miles was talking about the cat, not Mae. Mae is disappointed that Miles doesn't like her cat but that's not a good reason to break up with him.
- Dawn Moves Out
- Scaredy Dance
- The Quadfather
- Take the Money and Run
- Valentime's Day
- Wanted: The Sugar Beet Gang
- No Ifs, Ands, or But-ers
- Urban Legend Outfitters
- Unhappy Campers
- I Want Candace
- Ballet and the Beasts
- She Blinded Him with Science (Bob)
- Three Men and a Mae B.
- Diary of an Angry Quad
- Quad Court
- Nicky, Ricky, Dicky & Sicky
- Mission: Un-Quaddable
- A Brief Case of Popularity
- New Kid on the Block
- The Tell-Tale Art
Mae was promoted to a main character. Her only absence in the season is YOCO.
Mae continues her role as a main character. Her only absence in the season is Quadentity Crisis.
- Mae is afraid of snakes and balloons as mentioned in the episode Dawn Moves Out and The Buffa-Lowdown.
- Her catchphrase is "I gotta ask are we *insert word here*,are we not *insert word here*."
- She can do a very deep satanic voice.
- Mae is Dawn Harper's best friend and is close with the other male Quads.
- Mae wears Justice clothes.
- Mae is the mascot of Dawn's soccer team.
- She is allergic to tulips.
- She is known by the quads to be very good with technical stuff.
- As a main character, she is only absent in two episodes, they were: YOCO and Quadentity Crisis.
- As shown in Urban Legend Outfitters, she has asthma.
- She shares the same last name as Cat Valentine, a main character from Victorious and Sam & Cat.
- She also shares the same last name and a similar first name as Mai Valentine, a character from the first series of the Anime series Yu-Gi-Oh!.
- The only time she was an antagonist towards Nicky Ricky & Dicky was in the episode "I Want Candace."
- She can play the saxophone.