Main •
Zak Saturday (voiced by
Sam Lerner): The son of Doc and Drew Saturday, Zak seeks adventure at every turn, which is easily satisfied by his
cryptid-researching family. He has an unorthodox upbringing that has taken him around the planet and placed him in the face of danger since the day he was born. Zak was imbued with Kur's essence prior to his birth, which gives the ability to mentally connect with cryptids. •
Doc Saturday (voiced by
Phil Morris): Solomon "Doc" Saturday is the patriarch of the Saturday family and an "
Indiana Jones"-like character who has spent his whole life studying cryptids. Doc Saturday naturally had black hair but after a fight with
Tsul 'Kalu, Doc was shocked by the claw that originally belonged to Kalu, giving him a streak of white hair and blinding him in his right eye. A man who takes science very seriously, Doc is one of the Earth's leading experts in the field of
cryptozoology. •
Drew Saturday (voiced by
Nicole Sullivan): Drew Saturday is the
matriarch and the one who "believes in magic," being more prone to accepting things on faith rather than empirical evidence. Drew was born to a family of adventurer-scientists. After her family was scattered during a severe blizzard in the Himalaya, she was raised by monks who may have taught her to believe not everything needs a reasonable/scientific explanation. Years later, she was reunited with her long lost brother, Doyle. •
Doyle Blackwell (voiced by
Will Friedle): Doyle is Zak's biological uncle, Doc's brother-in-law, and Drew's long-lost younger brother. He first appears as Van Rook's apprentice in "The Kur Stone". In "Van Rook's Apprentice", he changes sides and joins the Saturdays after learning he is Drew's brother and about V.V. Argost's true motives. •
Fiskerton (vocal effects provided by
Diedrich Bader): Fiskerton is a seven-foot-tall creature resembling a cross between a
gorilla and a
cat, based on the Fiskerton Phantom. He was adopted by the Saturday family when his home was burned down in
Nottinghamshire, England, with him and Zak developing a sibling-like relationship. He is later be revealed to be a
Lemurian. •
Komodo (vocal effects provided by
Fred Tatasciore): Komodo is a 250-pound, genetically altered
Komodo dragon with a voracious appetite. He can become invisible and make other objects invisible. Though for the most part he is very obedient, Komodo's actions are often dictated by his stomach and he will ignore the family for a good meal. Extending from this, Komodo will often pick fights with others to get food. •
Zon (vocal effects provided by
Fred Tatasciore): Zon, named after the
Amazon rainforest where she was found, is an
Ornithocheirus who lives in a nest near the Saturdays' headquarters. The Saturdays anger her by crashing into her nest during the second episode, but she comes to appreciate them after Zak saves her life. She uses the cliffs where the Saturdays live as her hunting grounds.
Supporting •
The Secret Scientists: A group of Earth's greatest minds who specialize in various fields. •
Dr. Arthur Beemman (voiced by
Jeff Bennett): A Secret Scientist who studies
aliens and
UFOs. •
Dr. Henry Cheveyo (voiced by
Diedrich Bader): A Secret Scientist who works at the Mesa Observatory in Arizona. •
Dr. Miranda Grey (voiced by
Susanne Blakeslee): A Secret Scientist who specializes in quantum physics and wields a gun which can create miniature wormholes, allowing her to physically attack opponents from a distance. •
Deadbolt: A robot who is the sidekick of Dr. Miranda Grey. A running gag is that whenever Deadbolt is destroyed, he is repaired good as new and improved. •
Dr. Paul Cheechoo (voiced by
Danny Cooksey): A Secret Scientist from Canada who specializes in cold-climate research. He is shown to be more friendly to Zak and has a sense of humor. •
Professor Talu Mizuki (voiced by
Jerry Tondo): A scientist who invented a mind-swapping device for crime lord and philanthropist Shoji Fuzen, intending to use the device to give certain people a new body. When Mizuki was asked to use it to implant the mind of one of Fuzen's men into a
Hibagon, he took the Hibagon's body himself to prevent Fuzen from obtaining and weaponizing it. In the ensuing confrontation, Mizuki's original body was lost in a fire and the mind-swapping device was destroyed. He attempts to take revenge against Fuzen, but is convinced by Doc to let it go. He now lives in a cave lab alongside his white tiger working on rebuilding the device and joined the Secret Scientists. •
White Tiger: The unnamed pet of Talu Mizuki, who was implanted with the consciousness of his dog. •
Dr. Patchecutec (voiced by
Candi Milo): A Secret Scientist. •
Dr. David Bara (voiced by
Clancy Brown): A Secret Scientist who owned the Dream-Time Totem. •
Dr. Odele (voiced by
Phil Morris): A Secret Scientist who specializes in anomalous weather. •
Ulraj (voiced by
Adam Wylie): The young fish-like prince of
Kumari Kandam, whose father was killed in an assault orchestrated by V.V. Argost. With help from the Saturdays, Ulraj reclaims his kingdom. •
Agent Epsilon (voiced by
Brian Stepanek): A member of a secret organization that is loosely allied with the Secret Scientists. He and his "son" Francis are clones of a "perfect agent" who their organization found 100 years ago. •
Francis (voiced by
Scott Menville): The "son" of Agent Epsilon. • The
Hassi: A tribe in the Middle East that are allied with the Secret Scientists. They guard the Methuselah Tree, the source of all water on Earth. •
Maboul (voiced by
Diedrich Bader): The
chieftain of the Hassi. •
Wadi (voiced by
Liliana Mumy): The kleptomaniac daughter of Maboul. • '''
Tsul 'Kalu''': A skilled cryptid warrior. It was responsible for the scar over Doc Saturday's left eye.
Villains •
V. V. Argost (voiced by
Corey Burton): V. V. Argost is the series' main antagonist and the archenemy of the Saturdays, who seeks to acquire the power of Kur. He is the host of ''V.V. Argost's Weirdworld'', a series that made him "the modern master of the bizarre". Argost is actually a
Yeti who previously attacked humans out of enjoyment in the Himalayas and often took items from their camp as souvenirs. One of the 'souvenirs' Argost had taken from a camp he had attacked was a television, from which he learned to speak English. Argost resolved to live among humans by influencing them with a television show of his own. •
Munya (vocal effects provided by
Fred Tatasciore): Argost's butler. He was injected with the DNA of a Papuan giant
spider, giving him the ability to transform into a humanoid spider monster. •
Leonidas Van Rook (voiced by
Corey Burton): Leonidas Van Rook is a ruthless
cryptozoologist who is an ally of V.V. Argost and a rival of Doc Saturday. Van Rook is interested in proving the existence of cryptids for money. He is very thrifty, almost to a fault. Similar to Doc, he is an inventor and has many high-tech gadgets. During the final season, Van Rook assists the Saturday family. During the family's final battle against Argost, Van Rook is killed taking an attack that was meant for Drew. •
Shoji Fuzen (voiced by
James Sie): Shoji Fuzen is a Japanese philanthropist and
crime lord. •
Pietro "Piecemeal" Maltese (voiced by
Jess Harnell): A criminally-insane chef with an appetite for rare animals. Piecemeal has a surgically modified jaw made of four metal flaps which can bite through almost anything. He has above-average strength and durability. •
Baron Finster: Baron Finster is a cyborg with a mechanical scorpion body and tail for legs and an enemy of Doyle. •
Eterno (voiced by
Fred Tatasciore): Eterno was once an ancient warrior king with an unquenchable thirst for conquest. His attempt to find the Methuselah Tree, the source of all water on Earth, led to him being entombed in salt by the tree's centipede-like protectors and transformed into a humanoid salt monster with the ability to turn anything he touches into salt. • The
Mondays: The Mondays are the Saturdays' evil antimatter duplicates from a parallel universe, summoned by the Smoke Mirror of Tezcatlipoca. They are not well liked in their reality, most likely being criminals. Each Monday has a distinguishing characteristic that sets them apart from the Saturdays, and cause reality to warp when in the presence of their duplicates. The name Monday was given to them by Zak Saturday since, according to him, his double is a "less fun version of a Saturday", hence a Monday. •
Zak Monday (voiced by
Sam Lerner): His hair color reversed from Zak Saturday's along with his eyes glowing green when using his power with his Fang weapon. Zak Monday possesses the Anti-Kur power and uses it to drive cryptids insane rather than calming them. •
Doc Monday (voiced by
Phil Morris): Solomon "Doc" Monday's scarred eye is on the opposite side and he wears an eye patch over it. He usually speaks in incoherent babbling and has a much lower intellect than his counterpart. •
Drew Monday (voiced by
Nicole Sullivan): Drew Monday has a long, prehensile tongue, but is otherwise similar to her counterpart. She is more rationally scientific than her counterpart. •
Fiskerton Monday (vocal effects provided by
Diedrich Bader): Fiskerton Monday has horns in place of ears and is much more vicious than his counterpart. •
Komodo Monday (voiced by
Fred Tatasciore): Komodo Monday is capable of human speech and seems to be the leader of the group when they are not fighting amongst themselves. He possesses black spots on his back which he can expand to cover his entire body and harden his skin. •
Zon Monday (vocal effects provided by Fred Tatasciore): Zon Monday has eye-like patterns on her wings, but otherwise behaves almost exactly like Zon Saturday. •
Dr. Lee (voiced by
Diedrich Bader): A villainous scientist who was a colleague of Basil Lancaster and young Doc Saturday in a project to create cryptids in Honey Island Swamp. When the project went out of control, Lancaster betrayed him and the other three scientists by destroying enough of their research to cripple the project, saved the cryptids, and fled into the bayou. Years later, they lure the Saturdays to Honey Island Swamp and make Doc restart the project. However, after learning the truth, the Saturdays manage to defeat and arrest Lee and his accomplices. •
Rani Nagi (voiced by
Susanne Blakeslee): The four-armed Queen of the
Nāgas. •
Abbey Grey (voiced by
Kari Wahlgren): Once Zak's babysitter, Abbey Grey is an ancient civilization expert and Miranda Grey's sister who would later go rogue and become a mercenary.
Cryptids The following cryptids whether they are notable or fictional appear in this show in order of appearance: •
Amarok (vocal effects provided by
Fred Tatasciore): A wolf cryptid. •
Cherufe: In this show, the Cherufe is a
humanoid lizard. •
Owlman: A humanoid owl cryptid who is worshiped by a cult in Southern Cornwall, England. •
Atomospheric Jellyfish: A race of jellyfish that move around in the atmosphere. •
Rakshasa: In this show, the Rakshasha is a large purple shapeshifting cat-like creature. •
Duah - A
pterosaur cryptid. • The
Swamp Cryptids: A group of artificial cryptids created by Basil Lancester, whom they remain loyal to even after his death. They initially attack the Saturdays, but ultimately help them after revealing that they were working to destroy the project that created them. •
Bardin Booger: The Bardin Booger is a Bigfoot-like creature. •
Devil Monkey: The Devil Monkey is a monkey-like creature with horns. •
Fouke Monster: The Fouke Monster is a Bigfoot-like cryptid. •
Georgia Pigman (vocal effects provided by
Dee Bradley Baker): The Georgia Pigman is a
pig-headed
ape-like creature. •
Green Goon: The Green Goon is an ape-like creature. •
Hawley Him: The Hawley Him is a black-furred Bigfoot-like creature. •
Honey Island Swamp monster (vocal effects provided by
Dee Bradley Baker): In this show, the Honey Island Swamp Monster is a Bigfoot-like creature with a monkey-like head,
crocodilia feet, and
crab-like claws. •
Kinchafoonee Creep: The Kinchafoonee Creep is a
bat-headed creature with
wild boar-like tusks. •
Lake Worth Monster: The Lake Worth Monster is a hairy creature that has the head and hooves of a
goat. It was the one who showed Doc and Drew the message from Dr. Lancaster and helped to intimidate Dr. Lee and his colleagues into undoing the fusion done to Zak, Fiskerton, and Komodo. •
Bishopville Lizard Man: A
reptilian humanoid. In this show, the Bishopville Lizard Man has acid-spitting abilities. •
Man Cat: The Man Cat is a Bigfoot/
black panther-like creature. •
Mississippi Swamp Ape: The Mississippi Swamp Ape is a "bearded" Bigfoot-like creature. •
Momo the Monster: A Bigfoot-like creature with hair covering most of its face. •
Grootslang: In this show, the Grootslang is a four-tusked
elephant cryptid with horns and a spiked tail. •
Lau: A large
catfish-like Cryptid. •
Maltese tiger: A cryptid that resembles a blue
South China tiger. •
Allegewi (vocal effects provided by
Fred Tatasciore): A large cryptid. •
Ahuizotl (vocal effects provided by Fred Tatasciore): In this show, the Ahuizotl resembles a humanoid creature with a hand on its tail. •
Bunyip (vocal effects provided by
Dee Bradley Baker): In this show, the Bunyips are depicted as
gremlin-like creatures. •
Lake Van Monster: In this show, the Lake Van Monster resembles a
Mosasaurus-like creature. ==Episodes==