• Kong (vocal effects provided by Scott McNeil) is a genetically engineered clone of the original King Kong created by Lorna Jenkins by using the DNA of the deceased original Kong and from her grandson's DNA. Because of that, he has a younger brother relationship with Jason, signified by Jason calling Kong "Bro". He is known as the Protector, using his strength and the Primal Stones to protect the world from the demon Chiros. Through the use of the Cyber-Link, Jason can fuse with Kong and grow to twice his size. Both have strong wills so Kong can only stay in Jason, or vice versa, for a short period of time before causing each other harm.
• Jason Jenkins (voiced by Kirby Morrow as an adult, Alex Doduk as a young boy) is the orphaned grandson of Dr. Lorna Jenkins and is an "older brother" to Kong. With his DNA, Lorna was able to clone Kong after the original one died from falling to his death from the Empire State Building upon being taken down by planes. Jason is an archeology major at a university and best friend to classmate Tann. After being tricked by De La Porta and losing the Primal Stones, Jason, along with Tann, Lua and Kong searches for them all over the world while thwarting De La Porta's attempts of activating them for evil purposes. Jason primarily uses the Cyber-Link to fuse with Kong, but has occasionally fused with other animals as well. It is obvious Jason has feelings for Lua. In the final episode, Lua and Jason confess their feelings for each other and nearly kiss, but Kong splashes them before they can.
• Eric "Tann" Tannenbaum IV (voiced by Scott McNeil) is Jason's best friend and a fellow college student. Though he is very muscular, he is a kind person who will go out of the way to help his friends. Tann also takes martial arts and trains with Jason, but is not as good as Jason as he was not accepted into a martial arts tournament. His parents are very wealthy and he always likes to buy new gadgets which often become very useful later on. With the trust fund his grandfather left him, Tann is wealthier than his parents. He is an accomplished pilot, always seen flying a plane (or any other vehicle).
• Lua (voiced by Saffron Henderson) is a female native who serves as the shaman of Kong Island and the last of her people. She knows many secrets on Kong Island and helps Dr. Jenkins with her research as she knows Dr. Jenkins only wishes to help. Lua takes her position very seriously even though she is only at the beginning level, keeping the Island secrets from the group and several times risking her life. She also has a pet Smilodon named Chondar. Because she has lived on the island her entire life, Lua is quite naive about the outside world. It is obvious she has feelings for Jason as she always gets jealous when the mention of a past female friend of his comes up or another woman shows interest in him. In the final episode, Lua and Jason confess their feelings for each other and nearly kiss, but Kong splashes them with water before they can.
• Dr. Lorna Jenkins (voiced by Daphne Goldrick in earlier episodes, Kathy Morse in later episodes) is a scientist who is Jason's grandmother and the one who cloned Kong from the DNA of King Kong. She is in the midst of researching the different species on Kong Island as well as the Primal Stones when De La Porta steals them in the first episode. During the missions, Dr. Jenkins stays back on the island giving information from her research lab in a hidden cave. She is able to help the team with her vast amount of friends in the archeological world to get the information they need. Lorna is seen to be very attractive to her male friends as they often flirt with her when they chat.

• Professor Ramon De La Porta (voiced by David Kaye) is one of the main antagonists of the series. Porta is a man (apparently of Hispanic origin) who tried to steal the research of Lorna Jenkins alongside his men years ago. However, an encounter with Jason and Kong resulted in him accidentally getting his hand badly burned by hot chemicals when trying to reach for his gun. While he and his two henchmen managed to escape, Porta had lost his right hand and was forced to use a prosthesis. Twenty years later, Porta got a job as a professor at the university Jason and Tann attend, concealing his robotic hand with a pair of work gloves. When Lorna Jenkins sends an e-mail to her grandson, Porta hacks it so that it appears as if he'd been invited as well. Once on Kong Island, Porta reveals himself to Jenkins and steals one of the Cyber-Links to merge with Lua's pet Smilodon, Chondar, whom Kong manages to fend off and eventually forces Porta to flee. However, Porta succeeds in kidnapping Jenkins and forcing her to lead him to the location of the Primal Stones. Porta uses the Primal Stones for his own purposes in different locations, even modifying the Cyber-Links he stole to merge with anything that resembles an animal or combining himself with two animals at once. In the final episode, his life force is sucked out by Harpy as part of the ritual to free Chiros. While it is returned to him once Chiros is reimprisoned, his life force is nonetheless broken by the ritual and he is later hospitalized.
  • Omar (voiced by Scott McNeil) is a tall African-American man and De La Porta's second-in-command.
  • Frazetti (voiced by Kirby Morrow) is a muscular Italian-American man with a blonde, cowlick hairstyle who works for De La Porta.
  • Giggles is a large, fat, unnamed man that works for De La Porta who earned his nickname from the fact he often giggles.
  • Tiger Lucy (voiced by Nicole Oliver) is an art dealer who once helped Tann's parents and seemed to have grown a crush on Tann, but later teams up with De La Porta and is complicit in many of his schemes, not caring what he wants to do as long as she gets paid. She primarily uses the Cyber-Link given to her by Roman to merge with her cat.
  • Rajeev is a one-time henchman of De La Porta who appeared in "Top of the World". He is of Indian descent and assisted Ramon in obtaining an ancient parchment from a Himalayan Monastery alongside hie allies. Rajeev uses the Cyber-Link that De La Porta gave him to merge with a giant Yeti that Kong befriended, though Kong manages to defeat Rajeev by freeing the Yeti from his control. Rajeev is arrested offscreen.
  • Wu-Chan (voiced by Scott McNeil) is a Chinese man and a one-time henchman of De La Porta who appears in "Curse of the Dragon". He aids De La Porta in kidnapping Jason and Lua in China when the former was invited to compete in a karate tournament. Wu-Chan and De La Porta force Jason into going into the Tomb of China's First Emperor near the Great Wall of China to retrieve a parchment that will reveal the secrets of the Primal Stone of Life and Death in exchange for Lua's safety. After the parchment is destroyed, Wu-Chan escapes with De La Porta.
  • Xepetotep is an Indian descendant of the Azteques along with his people. He is another one-time henchman of De La Porta, appeared in Quetzalcoatl. He works for Ramon because he promises him gold. During the fight between Ramon and Jason, he flees in the tunnels but he is finally arrested by his people whereas he tried to escape.
• Chiros (voiced by Paul Dobson) is a shaman who sought more power and tried to steal the Primal Stones, ultimately transforming into an ancient demon. He was sealed away by the original Kong and his shaman companion. After De La Porta steals some of the Primal Stones, Chiros is slowly released from his imprisonment. In the final episode, Chiros is freed and fights Kong himself, but is eventually defeated when Lua casts a spell and Kong throws him into the portal while re-imprisoning him.
  • Harpy (voiced by Pauline Newstone) is a gargoyle-like demon and Chiros' second-in-command. Unlike the rest of Chiros's gargoyle army, she appears more human and is able to think for herself, though she's completely devoted to Chrios' cause. In the final episode, Harpy is turned to stone after being thrown by Tann into the spell Lua recites.
  • Ominous is a demon who serves Chiros. He is the Chiros' most powerful warrior and is even able to match the likes of Kong in terms of strength. He is killed in the finale when Kong traps him in the moving sands.
• Rakhir (voiced by Ted Cole) is a poacher of Arab descent who travels to Africa to hunt gorillas. He and his men then capture Kong and Lua before Jason and Tann defeat him and arrest him then free their friends with the help of other jungle animals.
• Howling Jack Crockett (voiced by Richard Newman) is a film director and stuntman who'd disappeared from the public after some legal trouble involving some of his film stunts, making him a subject of a news program's "Where are they now" segment. He resurfaced some time later when he sees Kong and pilots a giant robot during Kong's fight with De La Porta and Omar. In the episode "DNA Land", Crockett captures Kong and Giggles for his new animal park. This plan is thwarted by Jason, who rescues Kong. In the episode "Interview with a Monkey", De La Porta arranges for footage to be given to Crockett for the special, but was ultimately thwarted by Kong. Taking pity on him, Kong offers Howling Jack a compromise, leading to the release of Crockett's latest film: Kong vs. the One-Eyed Critter from Saturn.
  • Giles is Crockett's butler.
• Andre (voiced by Ron Halder) is a firearms dealer who sells weapons to terrorists.

• Chondar - Lua's Smilodon companion. In Kong: Return to the Jungle, Chondar is revealed to be female and has become the mother to a cub called Kipling (named for Rudyard Kipling).
• Soara - Lua's Pteranodon companion.

• Ted Cole as Rakhir (in "Mistress of the Game")
• Alex Doduk as Young Jason Jenkins (in "The Return" Pt. 1)
• Ron Halder as Andre
• Phil Hayes
• Ellen Kennedy as Billy's Mom (in "Billy")
• Richard Newman as Howling Jack Crockett, Giles (in "DNA Land")
• Nicole Oliver as Tiger Lucy
• Venus Terzo as Amina (in "The Sleeping City")
• Dale Wilson as Dr. Nagire (in "Top of the World")

In 2005, BKN produced a film called Kong: King of Atlantis, which served as a continuation to the series in order to try and cash in on the 2005 King Kong remake. The film centres on Kong trying to protect the titular mythic island from a tyrannical human/snake hybridous queen Reptilla who plans on making Kong as ruler of Atlantis.

It's the 8th entry in the King Kong franchise.

The film was released on DVD in most regions by Warner Home Video.^[2]

A stand-alone sequel, titled Kong: Return to the Jungle was produced in 2006, and was computer-animated, unlike the first film and the series. In the film, hunters capture Kong and other animals from his island for a special zoo.

The film was released on DVD by Genius Entertainment in the United States, Morningstar Entertainment in Canada, and BKN Home Entertainment in the United Kingdom.

It's the 10th entry in the King Kong franchise.

Two video games were released based on the series, both on the Nintendo Game Boy Advance. The first, called simply Kong: The Animated Series, was released by Planet Interactive in 2002. The second was released by Majesco in 2005, and was based on the direct-to-video film Kong: King of Atlantis.