List of Yu-Gi-Oh! 5D's characters

The following is a list of characters from the Yu-Gi-Oh! 5D's anime series. Where appropriate, names from the original Japanese media are on the left while the English names are on the right. Character descriptions pertain to the original Japanese version of the series.

Signers (シグナー, Shigunā^?) are people who bear the Mark of the Crimson Dragon, a deity worshiped by a pre-Incan civilization that defended the world from the Red Nova and the Earthbound Immortals with the help of the Signer Dragons, powerful dragons that have been turned into Duel Monsters cards that the current Signers now possess. Signers are chosen by the Crimson Dragon to protect the world from evil.

Dark Signers (ダーク・シグナー, Dāku Shigunā^?) are the antagonists of the second arc of the show, who fight against the Crimson Dragon and the Signers. Dark Signers are born when someone who has died (usually someone wanting revenge on a Signer) is resurrected by an Earthbound Immortal (Earthbound God in the Japanese version), evil entities imprisoned in the Nazca Lines by the Crimson Dragon. Infused with dark powers and possessing dark cards, the Dark Signers are able to form a barrier around their opponents, initiating a Shadow Duel where attacks from monsters cause real damage. Sometimes, if the Dark Signer is showing weakness or resistance, the Earthbound Immortal itself can take over the Dark Signer's body. Dark Signers have special cards called Dark Tuner Monsters that can summon Dark Synchro Monsters with a negative level. They also have an Earthbound Immortal, represented by their birthmarks. When summoned, these monsters sacrifice the souls of anyone caught within the Dark Signer's geoglyph (with the exception of the duelists, Signers, and anyone protected by a barrier emitted by a Signer's birthmark). Their common attribute is the ability to attack directly and not be chosen as a target, although some circumstances allow them to attack monsters and be attacked themselves. In the anime, they are unaffected by Spell and Trap cards.

...
Wikipedia