Dr. Matt Harmon is a recurring character in Fuller House. He is portrayed by John Brotherton


Occupation Underwear Model
Vet at Harmon Pet Care


Season 1

The Not-So-Great Escape

Matt comes to the pet clinic to take his father, Fred, to the airport for his vacation. Fred tells D.J. that Matt will be helping out in the clinic while he is away.

The Legend of El Explosivo

Matt shows D.J. an x-ray of a wiener dog who swallowed a flash drive.

Ramona's Not-So-Epic Party

When Matt brings Comet Jr. Jr. into the waiting room he meets Steve. Out of jealousy Steve suggests Matt meet and maybe date Kimmy, and D.J. thinks it's a good idea so she invites Matt to Ramona's birthday party.

Matt turns up to Ramona's party with Hawaiian punch for the kids and tequila for the adults. After D.J. introduces Kimmy and Matt, Kimmy starts chocking on a mini corn dog so Matt gives her the Heimlich. As Kimmy hugs Matt to say thank you, Fernando comes up from the basement and slaps Matt with a rubber glove, challenging him to a fight. After Fernando finds out Matt saved Kimmy's life, Fernando thanks him by kissing Matt on both cheeks.

After being slapped and kissed by Fernando, Matt decides to leave. When he opens the front door, Steve is there wondering how things went with Kimmy. Steve offers to walk Matt to his car to make sure he leaves.

Secrets, Lies, & Firetrucks

After helping D.J. with the inventory at the pet clinic, she and Matt have Chinese food in the waiting room. As D.J. is leaving Matt goes to tell her she left her purse behind, she runs back and jumps into his arms and gives him a big kiss.

War of the Roses

Matt brings D.J. coffee while she is working and asks her out on a date. She initially says yes but when Matt questions her about not mentioning the flowers he brought her, D.J. believes he is talking about the 1000 roses left at her house. D.J. makes up an excuse and calls off the date because she thinks Matt is moving way too fast.

When Matt turns up Becky questions him about sending the roses. Matt says he sent D.J. 2 sunflowers that he left at the front desk at the Pet Clinic, not the 1000 roses. Matt and D.J. reschedule their date.

A Giant Leap

When Matt comes by to pick up his ticket to the baseball game, D.J. walks him out and they kiss. At the game Matt gives Jackson his credit card to buy food, but Jackson ends up buying a $247 autographed jersey for Lola and has to pay Matt back by washing his car every week for 2 years.

Matt tells D.J. he loves the city, being close to his family, working at the pet clinic and being with her. He has decided to move to San Francisco permanently. The 'KISS CAM' keeps showing D.J. and Matt wanting them to kiss; the first time D.J. kisses Max, the second time time Matt kisses D.J. on the cheek, but when they're shown for a third time Matt and D.J. kiss on the lips.

After the game Steve and Matt both turn up wanting an explanation. Who does D.J. want to date? Both Steve and Matt want to continue dating D.J. When they both go to kiss her on a cheek each, D.J. moves out of the way and they kiss each other on the lips.

Partnerships in the Night

While Matt and D.J. are kissing at work, Fred walks in on them. He announces the Matt will be the one to take over the pet clinic. D.J. is very discouraged about the news asks Matt to cover for her for the rest of the day, and begins to think about quitting to pursue her dream of starting her own business.

At the party Matt asks D.J. to be his partner at the pet clinic; run the clinic 50-50 and change the name to 'Harmon-Fuller Pet Care'. D.J. is hesitant over mixing business with pleasure but accepts the partnership because she loves the clinic, the pets and clients.

Love is in the Air

D.J. and Matt cut the ribbon together to officially open Harmon-Fuller Pet Care. Stephanie calls Matt to be D.J.'s date for the weddings. When he and Steve both turn up early for the weddings, D.J. tells them she will make a decision about who she want's to be with after the ceremony, that's when she tells them she chooses herself.

Season 2

Welcome Back

When D.J. chose herself over him and Steve, Matt started dating a young flexible Crystal, to make D.J. jealous.

Season 3

Best Summer Ever

Matt tells D.J. he loves her for the first time.

Declarations of Independence

Matt is angry with D.J. after she takes over a Facebook live broadcast. Danny helps them talk through their problems and everyone watches the fireworks display from the backyard.

Uncle Jesse's Adventures in Babysitting

Matt attends dinner at the Gibbler House with D.J., Kimmy and Stephanie.

M-m-m-My Ramona

Matt loves Jackson's coffee after Jackson comes into the clinic and ends up answering phones and making the coffee.

Say Yes to the Dress

Matt - jealous of D.J. singing with Steve - makes up a special handshake for him and D.J to share.

Wedding or Not Here we Come

Matt fails Kimmy's boyfriend buzz feed quiz, but presents D.J. with the perfect gift for their trip. While on board the plane Matt talks to Stephanie about proposing to D.J. in Japan.




  • His underwear modeling put him through vetinerian school
  • Matt is terrified of ghosts


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