Kip (KiNaTu) is a skilled Lunarian mind mage and technician who designed and built the tower of Zot.
Aur is the Watcher of Zemi Dreigiau who was sent to the Blue Planet to help protect and guide Ben.
Ben is a Half Lunar mage prodigy and the son of KluYa. After an attack on his family, he was taken into custody to the tower of Zot.
TsuMeTai (TsuMe) is a powerful warrior-mage of unknown origins. His fearsome appearance and unfriendly attitude are enough to intimidate most of the inhabitants of Zot.
A small, loyal machine built by Kip as part of the Zot security system.
Valice Arknell is a talented Wind Mage and a member of the Merc team. She is Tane's younger sister.
Rubin Lugae is a mage and the leader of the Merc team. He is the brother of Dr. Lugae. He appears to be often sickly in health and rather selfish for his own safety.
Tane "One-Dice" Arknell is a warrior and a member of the Merc team. He is Valice's older brother. He is generally good-natured, but known for his lack of intelligence.
Zemus is a Lunarian mage who is currently trapped in cold sleep on the Red Moon. Despite this, he keeps close contact with the inhabitants of Zot, working to carry out his plans of Lunar colonization.
Sapling is a young Daear elf from the Blue Planet. She acts as the healer in the Tower of Zot.
Zemi Dreigiau is an Arweinydd of the old Nefolian world. He sends his Watcher, Aur, to the Blue Planet to protect and guide his lost grandson, Benjamin Ya.
Hinge is a small ferret-like creature. Sapling's companion pet.
Quirky AI built into the Big Whale. Greatly resembles its maker, KluYa.
A Lunarian mage and technician who was sent to the Blue Planet to pave the way for colonization with the humans. He is the son of Zemi Dreigiau and the father of Benjamin Ya.