Gaia Knight
Yu-Gi-Oh! archetype · 10 cards
Gaia Blaze, the Force of the SunDUNE-EN042 · Duelist Nexus · +1 printing
Gaia Dragon, the Thunder ChargerGAOV-EN046 · Galactic Overlord · +3 printings
Gaia Drake, the Universal ForceSTBL-EN039 · Starstrike Blast · +1 printing
Gaia Knight, the Force of Earth5DS1-EN042 · Starter Deck: Yu-Gi-Oh! 5D's · +3 printings
Gaia Prominence, the Fierce ForceAGOV-EN033 · Age of Overlord
Gaia Saber, the Lightning ShadowCOTD-EN051 · Code of the Duelist · +2 printings
Gaia Stream, the Graceful ForceDUAD-EN047 · Duelist's Advance
Gaia the Dragon ChampionLOB-125 · Legend of Blue Eyes White Dragon · +8 printings
Gaia the Magical Knight of DragonsROTD-EN037 · Rise of the Duelist · +2 printings
Sky Galloping Gaia the Dragon ChampionMIL1-EN010 · Millennium Pack
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).