| Clown Crew BiancavisoBlazing Dominion · 015 | Blazing Dominion | 015 | Super Rare | $2.56 |
| Clown Crew CappelloBeyond the Brave · 099 | Beyond the Brave | 099 | Super Rare | €0.57 |
| Clown Crew DiaboloBlazing Dominion · 032 | Blazing Dominion | 032 | Common | €0.16 |
| Clown Crew DristyChaos Origins · 042 | Chaos Origins | 042 | Super Rare | $0.27 |
| Clown Crew FiendsBlazing Dominion · 046 | Blazing Dominion | 046 | Common | €0.13 |
| Clown Crew FinaleChaos Origins · 076 | Chaos Origins | 076 | Common | €0.16 |
| Clown Crew FlairBlazing Dominion · 029 | Blazing Dominion | 029 | Super Rare | $2.59 |
| Clown Crew MalabarismeBlazing Dominion · 061 | Blazing Dominion | 061 | Super Rare | €0.75 |
| Clown Crew Matinee OperaticsBlazing Dominion · 060 | Blazing Dominion | 060 | Common | €0.13 |
| Clown Crew MeteorBlazing Dominion · 040 | Blazing Dominion | 040 | Common | €0.14 |
| Clown Crew New FaceBlazing Dominion · 074 | Blazing Dominion | 074 | Common | €0.13 |
| Clown Crew RehearsalBlazing Dominion · 059 | Blazing Dominion | 059 | Super Rare | €1.04 |
| Clown Crew Soiree OperationsBlazing Dominion · 073 | Blazing Dominion | 073 | Common | €0.14 |
| Clown ZombieTournament Pack 6 · 020 | Tournament Pack 6 | 020 | Common | €0.13 |
| Cluster CongesterCybernetic Horizon · 002 | Cybernetic Horizon | 002 | Common | €0.03 |
| Coach Captain BearmanJudgment of the Light · 092 | Judgment of the Light | 092 | Ultra Rare | €0.04 |
| Coach GoblinInvasion of Chaos · 015 | Invasion of Chaos | 015 | Common | €0.05 |
| Coach King GiantrainerNumber Hunters · 037 | Number Hunters | 037 | Secret Rare | €0.13 |
| Coach Soldier WolfbarkJudgment of the Light · 093 | Judgment of the Light | 093 | Secret Rare | €0.12 |
| Cobra JarPharaonic Guardian · 075 | Pharaonic Guardian | 075 | Common | €0.50 |
| Cobraman SakuzyPharaonic Guardian · 032 | Pharaonic Guardian | 032 | Common | $0.82 |
| Cocatorium the Heavy Metal AvianGhosts From the Past: The 2nd Haunting · 038 | Ghosts From the Past: The 2nd Haunting | 038 | Ultra Rare | €0.29 |
| CockadoodledooJudgment of the Light · 083 | Judgment of the Light | 083 | Ultra Rare | €0.07 |
| Cockroach KnightTournament Pack: 1st Season · 029 | Tournament Pack: 1st Season | 029 | Common | €0.72 |
| Cocoon of EvolutionMetal Raiders · 011 | Metal Raiders | 011 | Super Short Print | €0.05 |
| Cocoon of Ultra EvolutionLegendary Duelists: Ancient Millennium · 009 | Legendary Duelists: Ancient Millennium | 009 | Ultra Rare | $1.81 |
| Cocoon of Ultra Evolution (Skill Card)Speed Duel: Trials of the Kingdom · 04 | Speed Duel: Trials of the Kingdom | 04 | Ultra Rare | — |
| Cocoon PartyTactical Evolution · 048 | Tactical Evolution | 048 | Common | $0.19 |
| Cocoon RebirthTactical Evolution · 050 | Tactical Evolution | 050 | Common | $0.16 |
| Cocoon VeilTactical Evolution · 065 | Tactical Evolution | 065 | Common | €0.16 |
| CodarusAbsolute Powerforce · 032 | Absolute Powerforce | 032 | Common | €0.14 |
| Code A Ancient RuinsCrimson Crisis · 088 | Crimson Crisis | 088 | Super Rare | €2.99 |
| Codebreaker Virus BerserkerEternity Code · 051 | Eternity Code | 051 | Common | €0.22 |
| Codebreaker Virus SwordsmanEternity Code · 052 | Eternity Code | 052 | Common | €0.21 |
| Codebreaker Zero DayEternity Code · 002 | Eternity Code | 002 | Common | $0.18 |
| Code ExporterGhosts From the Past: The 2nd Haunting · 024 | Ghosts From the Past: The 2nd Haunting | 024 | Ultra Rare | €0.08 |
| Code GeneratorToon Chaos · 022 | Toon Chaos | 022 | Rare | €0.07 |
| Code HackMaze of Millennia · 039 | Maze of Millennia | 039 | Rare | €0.09 |
| Code IgniterAlliance Insight · 044 | Alliance Insight | 044 | Common | $0.14 |
| Code of SoulLegacy of Destruction · 099 | Legacy of Destruction | 099 | Super Rare | €0.11 |
| Code RadiatorFists of the Gadgets · 039 | Fists of the Gadgets | 039 | Secret Rare | $0.18 |
| Code TalkerFists of the Gadgets · 043 | Fists of the Gadgets | 043 | Super Rare | €0.08 |
| Code Talker InvertedIgnition Assault · 096 | Ignition Assault | 096 | Super Rare | €0.02 |
| Coffin SellerPharaonic Guardian · 093 | Pharaonic Guardian | 093 | Rare | €0.31 |
| Cold-Blooded TacticianSpeed Duel GX: Duelists of Shadows · 19 | Speed Duel GX: Duelists of Shadows | 19 | Common | $0.29 |
| Cold EnchanterThe Duelist Genesis · 096 | The Duelist Genesis | 096 | Rare | €0.12 |
| Cold FeetReturn of the Duelist · 065 | Return of the Duelist | 065 | Short Print | $0.11 |
| Cold WavePharaoh's Servant · 062 | Pharaoh's Servant | 062 | Common | €0.22 |
| Collected PowerLabyrinth of Nightmare · 078 | Labyrinth of Nightmare | 078 | Short Print | €0.05 |
| Colonel on C-StringDimension Force · 081 | Dimension Force | 081 | Common | $0.05 |