Other characters

Other characters, either mentioned or physically appeared, throughout Summer Camp Secrets.

Miss Manhattan

 * Brian: A red haired Australian man who decided to teach the sports elective at Camp Lakeview. Natalie writes him as "cool" since he is from another country. His second and final appearance was in Wish You Weren't Here teaching beside Kimberly.
 * LJ: He was mentioned but never physically appeared. It was stated he would tell bunk 3C what his initials stood for at the camp banquet but that was never shown.
 * Beth: She is one of two swim instructors, the other being Tyler. She never physically appeared but was mentioned trying to encourage Natalie to join in, including saying lake water was good for the skin (which Natalie gave an "A for effort). She was never heard of again.

Prankster Queen

 * Tyler: He is one of two swim instructors, the other being Beth. He is described as good looking among the girls at camp and Jenna agreed he was cool. Rumors were floating around suggesting him and Jenna's older sister Stephanie were dating. He tried to help Jenna with her diving until she finally managed it. He was never heard of or seen again.
 * Faith: She is the photography elective instructor. She is described as being much younger than Julie and the other counsellors, but tries to make herself look older by having her hair in a ponytail and wearing glasses. She was never heard of or seen again.

Best Friends?

 * Devon: He is 11 years old and attended Camp Lakeview. He enjoys drama and acting; through taking the drama elective he met Grace and they developed a crush on one another. Devon was mentioned as Grace's crush in Party Time! and Three's a Crowd. In Reality Bites, Grace was excited to see him until Spence told her he wasn't coming back that year because he was on holiday in Hawaii with his family. He was never seen or heard of again through the rest of the series.
 * Ronald: He once appeared struggling to put his bag onto the luggage shelf and refused Adam's help. He was never heard of or seen again.
 * Bethany: The drama elective instructor. She encouraged Grace to audition for the camp play, and was never seen or heard of again.

Little Miss Not-So-Perfect

 * Jeremy: He is the woodworking instructor, and is Nate's older brother. He has brown hair and wears glasses, and was Julie's date for the camp play. He was never heard of or seen again throughout the rest of the series.

Blogging Buddies

 * Mr. Roslyn: Grace's English teacher at middle school. After Grace explained her struggles to read, he gave her his copy of Peter Pan and allowed her to keep it.
 * Kaitlyn: Natalie's middle school friend.
 * Erin: Natalie's middle school friend. She liked a boy named Matt.
 * Veronica and Lisa: Friends of Jenna's friend Nicole who attended the same middle school.
 * Chloe: Natalie's middle school classmate.

Three's a Crowd

 * Jesse: Newspaper elective counsellor.

Wish You Weren't Here

 * Keith: Sports elective counsellor.
 * Kimberly: Sports elective's softball coach.

Falling in Like

 * Mr. Preston: Alyssa's art teacher in her middle school.
 * Willa Ackel: A model who was the subject of sketching in Alyssa's art class in her middle school.
 * Ms. Caya: Principal of Alyssa's middle school.
 * Ms. Romero: Priya's and Jordan's science teacher in middle school.
 * Leslie Graff: Priya's and Jordan's science classmate in middle school. She has brown hair in a ponytail and wears dirty glasses. Priya becomes her partner after Priya and Jordan break their partnership. Her science fair project was on photosynthesis, and her mother describes her as an "old hand at science fairs" saying her daughter won trophies through competing. After Priya fails to contribute to her project, Leslie takes her off the project and teamed up with Marco; throughout the book, Leslie was seen blushing around Marco, suggesting she likes him.
 * Marco Rubio: Priya's and Jordan's science classmate in middle school who also proposed a photosynthesis project and wears glasses.
 * Mrs. Graff: Leslie's mother. She also wore her hair in a ponytail and glasses. She first meets Priya in the mall food court.
 * Martin Simpson: Riley Simpson's uncle. The pair run a hot dog stand, Simpsons' Hot Dogs, in the mall food court.
 * Riley Simpson: An eighth grader who first meets Priya in the mall parking lot. Him and his uncle, Martin, run a hot dog stand in the food court. He is often seen dressed in either blue or black clothing and has a stud earring in one ear. He is friendly and takes a liking to her, leading to Priya developing a crush on him. Riley has a friend, Marta, who Priya misinterprets as his girlfriend when really they were discussing about her. He was mentioned as Priya's crush in On Thin Ice and Hide and Shriek but was never spoken of again.
 * Marta: A red haired girl who is in eighth grade and is a friend of Riley's. She calls herself his "advisor" over matters about Priya. She has a boyfriend named Jay.
 * Suki Schroder: She was mentioned as Tori's and Kallista's tennis instructor but didn't physically appear.

On Thin Ice

 * Gretchen: She was mentioned as one of Natalie's middle school friends but didn't physically appear.
 * Vicki and Trish: Natalie's cousins who live in Connecticut. They appear once in the book and then are never seen or heard of again.
 * Tanya: Brynn's best friend in middle school. She appeared three times throughout the book and then was never mentioned, seen or heard of again.
 * Lindsay: Brynn's acting rival who was aiming for the main role in My Fair Lady but lost to Brynn and got the Dr Higgins' assistant part instead. She was mentioned twice and physically appeared once to congratulate Brynn.

Hide and Shriek

 * Jeremiah Wheatly: He is 18 years old and his family runs an ice cream shop, Wheatly's Waffle Cones, in a town near Camp Lakeview. He has brown hair and wore his arm in a sling, since he had broken it in an accident. Jeremiah has a crush on bunk 5A's CIT, Clarissa, and wanted to get her attention so she would go out with him, so him and his friend Dan scared the entire bunk of 5A as a prank. Things quickly went south. According to Natalie's letter to Grace, Clarissa finally noticed him.
 * Dan Magnusen: He is Jeremiah's friend and helped him get Clarissa's attention. They done this by scaring bunk 5A, who in turn thought it was Cropsy. His dog, named Monster, was loose and had run off, so he chased after him. Dan was quickly apprehended by Belle and told the truth. He has blonde hair, a blonde goatee and is of high school age.
 * Jamieson Cropwell: Nicknamed Cropsy, he is a rumored legend throughout Camp Lakeview, in that he cut off a boy's arm before his own arm was cut off; he has been seeking that missing arm since. In reality, he was the owner of a gory theme park which locals didn't want. After he lost his arm in an accident and his wife passed, he ignored the park and it fell into disrepair. After Chelsea accidentally fell through the Chamber of Horrors ceiling, and the rest of the bunk came to save her, Cropwell threatened to call the police.
 * Nicole: Tori's cousin mentioned in Hide and Shriek. She has another cousin, Samantha.
 * Samantha: Nicole's cousin mentioned in Hide and Shriek. She and her bunk went on a camp-out similar to the one 5A had done. Her bunkmate, Theresa, fell ill and was taken to hospital, but the rest of her bunk misinterpreted it as Cropsy kidnapping her. None of them have returned to Lakeview since.

Reality Bites

 * Dana: Newspaper elective counsellor. She is described as having blonde eyebrows and twisted hair with multiple pencils.
 * Spence: He has blonde hair, blue eyes and glasses. His first appearance was in Just Friends? offering Priya and Abby glasses of Coca-Cola. His next appearance was in Hide and Shriek with Jenna watching him talk to Chelsea, although no dialogue was exchanged. His third appearance was in Reality Bites where he and Grace partner on the arts column piece in newspaper. Spence has a crush on Priya, Chelsea and Grace, who in turn all develop a crush on him. He is labelled as a flirt, talking to any girl regardless of whether he likes her or not. He mentioned having an uncle whose into plays and saw Wicked. He was never seen or heard of again through the rest of the series.

The Clique

 * Lainie Wilcox: Heralded as the "Queen of Lakeview", Lainie acts superior since her and her friends are in the sixth division at Camp Lakeview. She and Natalie become friends, but their friendship turns south after she asks Natalie for help to attract Logan's attention, whom they both have a crush on. Alex and Grace reveal to Natalie that Lainie is a user, who has done a similar process every year. She is noted as a sports fiend, with her first appearance being in Three's a Crowd. Her and her friends are never seen or heard of again through the rest of the series.
 * Patty: Lainie's friend. She and Trish are described as "these two rudes" by Lainie for being nasty to Natalie.
 * Daniella: Lainie's friend.
 * Liliko: She is Lainie's friend, and is described as having long, black hair with purple streaks, and is of Asian descent. She and Daniella act nicely towards Natalie.
 * Trish: She is Lainie's friend. After Natalie meets her and her friends, her and Patty act rude to her. (Not to be confused with Natalie's cousin, also named Trish.)

New Girl

 * Drew Brody: He is one of the Drama League members and has a crush on Candace. He is the joker of the group and is good friends with Rosemary, Brynn and Eli.
 * Rosemary: She is one of the Drama League members and is half Korean, half American descent.
 * Eli: A Drama League member who sports a red headed Mohawk. He appears three times throughout the book: the first was when Rosemary and Drew introduced Brynn, and a further two times he was mentioned sitting at their lunch table.
 * Joshua, Serephina and Samantha: Members of the Debate Club which Brynn joins after she quits Drama League. They are also Candace's friends and brand the Drama League members 'geeks'.
 * Rowan: She is one of Candace's friends who attends the school science club.
 * Mr. Saunders: The Drama League supervisor.
 * Ms. McAdorey: The Debate Club supervisor.
 * Mr. Merrill: Candace's and Brynn's maths teacher.
 * Ms. Jeunet: A woman who leads the volunteering at Home Away From Home. She revealed her first name, Julia, during the orientation, but was referred to as Ms. Jeunet throughout the rest of the book.
 * Leland Keyes: A boy who irritated Gaby by stepping on her foot and responds rudely to her. He later reveals to her that he attends Home Away From Home because he has a younger brother going through chemotherapy; he became increasingly worried for his brother, thinking he might die, thus his attitude. After Gaby spills her issues, Leland tells her she should think about other people rather than herself. His surname was revealed after Chelsea read his name tag. Valerie announced he and Gaby had a song duet at the Home's singdown.