Rinne Kudo


Hotaro’s classmate who is secretly an alchemist! Her father was an alchemist and is who gave Hotaro the Steamliner and Hopper1 Cards! She goes to Alchemist Academy, the secret school underneath Hotaro’s highschool!
She witnesses the scene where Houtarou becomes a Gotchard, and she begins to act together.

Kurogane spanner


He’s an A-Class Alchemist dispatched and working for Alchemist Academy! Unlike Hotaro, he's a cool pretentious elite who believes chemy are tools and shouldn’t have a free will. He made the Valvarad system and it’s not a rider system but simply just armored suit. He has a habit of saying, "It's a joke that can't be laughed at."

Fuga Kudo


He's one of the greatest alchemist among the Alchemy Society. He was ensuring the Chemy weren’t used as weapons by the main 3 evil sister, but was cornered by them, and gave his final wishes to Hotaro giving him the Hopper1 and Steamliner Cards! He’s Rinne’s father.

Tamami Ichinose


Houtaro's mother who runs a set meal restaurant single-handedly. She believes in her husband, who travels abroad as an adventurer, and warmly watches over her son Houtarou.

Three Dark Sisters (kiri ke kanan)


Lachesis, the youngest who specializes in dark alchemy that controls will.
She uses a special alchemy that is activated by the tone of her mouth harp
Atropos, the oldest sister who takes on a child form, she is the strongest and is after all 101 Chemy and GotcharDriver.
Krotos, middle child, and mainly a physical fighter

Minato


A dull-looking middle-aged history teacher at Houtarou's high school. His true identity is a teacher at the alchemy academy hidden in the basement of the school!?
It’s unknown if Minato is his real name, but when he switches to his alchemist clothes he becomes really cool and mysterious!

Tsuruhara Sabimaru


A brainy alchemist who attends the same alchemy class as Rinne. He is extremely misanthropic, and has the sharp-tongued AI "Isaac" built into the tablet he carries around to speak for him. He actually has a side of him that likes Chemie just like houtarou.

Ginko Renge


An alchemist from Kansai who goes to the same class as Rinne. Her family is not wealthy and she’s a…Very cheap individual to say the least. She’s always trying to sell ChemyCards to Hotaro‼️ She has a long relationship/friendship with another one of the classmates, sabimaru.

Ryo Kajiki


Houtarou's classmate and a boy who loves the occult. He is an avid reader of the occult magazine Paranormal Planet.