"C"

""C"", known as "G" ( Jī) in the OCG is a series of Insect-Type EARTH Monster Cards whose effects can be activated when the opponent Special Summons a monster(s).

The "C" stands for cockroach, and their artworks feature common household locations that can be inhabited by cockroaches, whose eyes are denoted by sparkles. This is made clear by the sprite used for "Shiny Black "C"" in Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia. The Japanese versions have "G" in their names, presumably standing for "Gokiburi", which means "cockroach".

"Shiny Black "C"" can banish itself from the Graveyard, when exactly 1 Synchro Monster is Special Summoned to the opponent's side of the field to destroy it. "Maxx "C"" can be sent from the hand to the Graveyard to draw a card each time the opponent Special Summons a monster(s) during this turn. "Flying "C"" can be Special Summoned from the hand to the opponent's side of the field, when the opponent Normal or Special Summons a monster(s) to prevent them from Xyz Summoning. "Confronting the "C"" Special Summons itself when your opponent Special Summons a monster from their Extra Deck, and if you do, it is unaffected by monster effects that target it.