Pair of Kings

• Mitchel Musso as King Brady (seasons 1–2) - One of the two protagonists of the series in seasons 1 and 2. Inherited his father's skin complexion. He has a crush on Mikayla. He is more illogical and in certain situations more serious than Boomer and he appears to be somewhat childish. He often uses his history of being bullied to help figure out how to solve a problem. He plays the guitar. He moved back to Chicago in season 3 after he overheard Mikayla say he was immature and he would never mature so long as he was a king.
• Doc Shaw as King Boomer - One of the two protagonists of the series. Inherited his mother's skin complexion. Boomer has moments of carelessness and is rarely serious, unlike his brother Brady, but in season 2, he begins to behave in a slightly more responsible and brave manner than Brady. In season 3, he is still getting used to having another brother and has become the voice of reason between him and Boz. In the third season two parter, he was revealed to know ballet. He also opened his own club called "Boomerama" in Season 3. In the episode "Bond of Brothers", it is revealed "Boomer" is in fact a nickname, but Boomer is interrupted before revealing his real name.
• Adam Hicks as King Boz of Mindu (season 3) - One of the two protagonists of the series in season 3. Inherited his father's skin complexion. He is Brady and Boomer's long lost triplet brother, who was lost in a storm on Mindu 17 years ago. He was raised by apes until he was ten, after which he was found and adopted by the king and queen of the island of Mindu. He does not like Mikayla very much because he feels that she looks like his ex-girlfriend even though it is very clear they look nothing alike. He tends to act like a real monkey from time to time, making him wild and unpredictable. Boz also possesses the power to converse with animals, as seen when he saves Boomer and Mikayla from a gorilla. It is made quite clear in the first few episodes of season 3, that of the triplets, Boz is the most intelligent. He is also the only one who appears to have at least average intelligence, if not over. In "I Know What You Did Last Sunday", it was revealed that in attempt to look for shelter, he unclogged Mindu's storm drain which caused the island to sink rapidly.
• Kelsey Chow as Mikayla Makoola - Mason's only daughter, Mikayla assists the triplets on many occasions. She is fearlessly tough and can handle anything, especially since she has inherited her father's fighting skills. She is shown to be very good with her machete, which she calls "Stabitha". Mikayla is the kind of person who tells the kings everything that they need to know, not just what they want to hear. Brady has a crush on her, but she continuously rejects him when he wants to go out with her. In the finale of season 2, Mikayla believes she may actually like Brady after having a dream of them almost kissing. She questions this and eventually kisses him to break him from a spell placed on him by the evil king. In the first episode of season 3, Mikayla does feel guilty upon hearing that Brady had left Kinkow.
• Ryan Ochoa as Lanny - Brady, Boomer and Boz's evil cousin who was heir to the throne until Boomer and Brady arrived. He is the main and inept antagonist of the series. He usually spends his time trying to think of ways to get rid of Brady and Boomer and attempts to cause them trouble. While at first indifferent to Lanny, the kings have built up an inexplicably large amount of love and trust for him and misinterpret any action he does as trying to help them. When Brady leaves Kinkow, Lanny takes the King Ring off of Mikayla, in order for Mikayla to return a favor to him. In the season 3 episode "O Lanada", Boomer and Boz give Lanny the island nation of Lanada without realizing the gold-producing gopher of Kinkow lives there. In the end, Lanny keeps Lanada. When Lanny wanted to donate his spit to restore Kaita the Bat-Rider, the Tarantula People planned to take Lanny's spit by force in front of Mikayla. After Kaita the Bat-Rider is restored and Mikayla confronts Lanny for his actions, Lanny declares that it is time for his favor to be called in and wants her to keep silent of his treachery. However, in the battle, Lanny decides to help the kingdom by destroying the zombies using a canon. He soon learned that Kinkow is his real home and decides to be nice.
• Geno Segers as Mason Makoola - The strong and fearless Royal Advisor and loyal friend to the kings' parents. He is the overly protective father of Mikayla and always threatens any boy who attempts to ask her out, including King Brady (Mikayla reveals her father's overprotectiveness is why she had to attend her school prom with a zebra for her date). He is often nicknamed "Sasquatch".

• Vincent Pastore as Yamakoshi - Lanny's one-hundred-year-old pet fish and only friend, though they are constantly at odds. He is malevolent and perpetually grumpy. It would seem that Yamakoshi is the true schemer against Brady and Boomer, but being confined to a fish-bowl makes it impossible to carry out his plans without Lanny. Only Lanny can understand Yamakoshi when he talks. In the Season 2 1-hour finale "The Evil King," it is revealed that Yamakoshi is really Kalakai, the evil twin of Malakai, first king of Kinkow, who founded the dark side. He was defeated and transformed into a fish by his brother. He regained his human form when the twin moons appeared in the sky and he tricked Lanny into placing him on the throne of the evil castle, which restored his true form, so long as he did not leave his castle, which would result in the curse activating again. However, he was defeated by Brady and Boomer, and fell into the river, which caused him to leave his castle, and change back into his fish form. He then returned to being Lanny's pet. He is not seen in season 3, making his whereabouts unknown.
• James Hong as Timothy Kalooka-Khan - Kinkow Island's head elder and shaman who learned everything from Kinkow Community College and is the go-to guy for the kings, though he openly dislikes them. In the season three episode "Mysteries of Kinkow," his real name is revealed on the Mysteries of Kinkow TV show when he was interviewed by Candace. His wife throws him out in the first part of the series finale after he makes fun of her cooking on TV. In the third part, he abandoned the island and left for Las Vegas to become a cab driver.
• Brittany Ross as Candace - Candace is Mikayla's naive gossip-loving friend. She was the most popular student in Mikayla's school, and has her own TV show called Mysteries of Kinkow. Candace is arrested by Mikayla in the series finale after nearly causing Kinkow to be destroyed.
• Martin Klebba as Hibachi - A dwarfish bully with 6 toes on each foot, Hibachi was the Kahula of Shredder Beach before Boomer and Brady defeated him in a surfing contest over who would be the Kahula. It was discovered that he cheats in order to win. Shredder Beach is a dangerous beach in Kinkow where the best surfer rules, and not even the kings have jurisdiction. He also makes an appearance on Boomer's Junga ball team, and as a bouncer in Brady's club.
• Logan Browning as Rebecca "Awesome" Dawson - Boomer's crush in school who thinks she said yes to going to prom with him. They wind up dancing anyway. She also comes to the island for a date with Boomer. When she visited Kinkow in "An Ice Girl for Boomer," she was taken away by a jealous caveman yet was rescued by Boomer and the caveman's girlfriend. She eventually dumped Boomer because he was too childish and "due to the fact that he sent her a painting of his butt". She then reappears and they get back together in the season 3 episode "Bond of Brothers". In "Meet the Parents," it is revealed that Rebecca's father was an exiled shaman of the Tarantula People who was part of a group that did not agree with their people's violent ways. Rebecca's father sought refuge with Boomer's parents who helped them escape to Chicago. In order to keep her safe following a fight against the Tarantula People, her father and Boomer used amnesia powder to make her forget everything about Kinkow and dating Boomer. However, Rebecca found the Bat Medallion that Boz hid at her house from the Tarantula People which ends up dragging Rebecca back to Kinkow and the amnesia powder wears off. When Rebecca finds out that she herself is a Tarantuala Person, she decides to stay to help the Kinkow army to help fight the forces of Kaita the Bat-Rider. Following the fight with Kaita, Boomer and Rebecca rekindle their relationship.
• Eric Petersen as Catawampus - Lanny's second-in-command in the third season. He is well aware of Lanny's true nature, but follows him nonetheless even being determined to accept his abuse so he will one day respect him. Catawampus gains his wish in the series finale after saving Lanny and he becomes good.
• Doug Brochu as Oogie - A Flaji who befriends Boomer, making Brady jealous. They mistakenly think he is a cannibal, but he turns out to be vegetarian. After the kings apologize to him, they are still unable to stop Mason from blasting him (who still believed he was a cannibal). He later develops a crush on a Dirt Fairy named Priscilla.

Mitchel Musso and Doc Shaw portray the two male leads, Boomer and Brady, the co-kings of Kinkow. After the second season, Mitchel Musso was dropped from the main cast,[6] and was replaced by Adam Hicks, who portrays the twins' long lost triplet brother, Boz. After the premiere on June 18, 2012, any mention of King Brady (Mitchel Musso) was completely removed from the Pair of Kings website.[7]

The series was filmed at Sunset Gower Studios (which also housed production of the first season of That's So Raven).