"Cyber" (サイバー Saibā) is an archetype of cards used by several characters in the Yu-Gi-Oh! GX anime and manga, most prominently Zane Truesdale. It includes the "Cyber Dragon" archetype and the "Cyber Girl" and "Cyberdark" series. Support had previously existed only in the anime and manga, but a support card for their Spells and Traps debuts for the OCG in Structure Deck: Blitzkrieg of the Mechlight Dragons.
Thematically, the cards in this archetype tend to resemble futuristic warriors (for the "Cyber Girls") or mythological beasts as well as stars in the Draco constellation (for the other "Cyber" monsters).
"Cyber Commander", "Cyber Falcon", "Cyber Saurus", "Cyber Soldier", "Cyber Soldier of Darkworld", "Cyber-Stein", "Cyber-Tech Alligator", "Cybernetic Cyclopean" and "Cybernetic Magician" are not considered to be part of this archetype, as their Japanese names do not contain "サイバー".