Bob runs a general store in the Wild West with puzzling business practices and will hand out as much dynamite as Mike needs, free of charge. He'll also gladly buy any gold found along the way.

Chief Coralcola is the chief of C-Island. He keeps the Argonian children safe, and also knows how to play a mean game of Tetris.

Mike encounters the legendary Queen of Egypt during his time in Ancient Egypt, who is in desperate need of her dinner. Cleopatra rewards Mike's assistance by taking him across the Nile to find a Tetrad. She'll also trade him her Bronze Dagger, if he hadn't previously acquired it from Jack.

Dr. Steve Jones, Mike's uncle and renowned archaeologist, has returned to Seattle to decipher a strange inscription found on the side of the space children's escape pod. He believes the answer lies within The Oxford Wonder World, a book he received from a very wise old man, which contains many historical tales and legends.

Hirocon is the King of the Argonians and the father of Mica. He transferred his essence into the Tetrads to escape from Zoda's wrath.

Jack of All Trades is exactly what his name suggests — a dealer who will trade with anyone for whatever he's got. Found hidden away in Ancient Egypt, he first offers Mike his Bronze Dagger in exchange for Tink's Axe. Whatever he has, he'll trade. Whatever Mike gives him, he'll trade right back.

King Arthur of Camelot is in need of a hero and his knights are all out on quests. Tipped off by Merlin, Arthur wastes no time knighting Mike on the spot, christening him as Sir Mike. King Arthur immediately tasks his new Knight of the Round Table with smiting the terrible dragon.

The genius inventor Leonardo da Vinci appears in Renaissance Italy, found encased in plaster in his villa. After Mike frees him, a grateful Leonardo lends his incredible inventions to the cause and rewards Mike with a powerful Katana.

Merlin, a magician in King Arthur's court, appears multiple times across Mike's journey through history. He serves as a recurring guide through the ages and provides Mike with the Psychic Shockwave and its upgrades.

Mica is the Princess of Argonia and the oldest of the space children rescued by Mike. She serves as Mike's telepathic guide, communicating with him across time to offer direction and encouragement as he pursues Zoda's clones through history.

Mike is a high school student and part-time adventurer from Seattle who had recently saved his uncle and seven space children from the clutches of the alien warlord Zoda. Now back home, Zoda's threat has resurfaced. Mike is once again pulled into an extraordinary journey, this time traveling through history itself to collect the Tetrads and stop Zoda's clones once and for all.

Pikazo is a caveman artist who has not spoken a word since his child was eaten by Yum-Yum. He has painted on his wall a guide to Yum-Yum's maze.

The pizza delivery man arrives on his tardy turtle, in search of the Nile with a large pizza with extra pepperoni for Egypt's best customer, Cleopatra. After Mike fills him in on the situation, he happily hands over the pizza and rides off.

The world's greatest detective appears in Victorian London to assist Mike in solving a mystery. True to his legendary reputation, Holmes applies sharp reasoning and keen observation to help Mike navigate the dangers of 19th-century England.

Tink makes tools from bone and stone. He gives Mike his first real weapon in the game for free because: "Cavemen don't have money. We just have thank-you!"

Despite his apparent destruction, Zoda survived. Rather than face Mike directly, he created three clones (Zoda-X, Zoda-Y, and Zoda-Z) of himself to continue his legacy and sent each one to a different era in history to hunt down the Tetrads.