Kamen Rider Blank Knight
Blank Knight is Dragon Knight's original form before forming a contract with an Advent Beast. This form is much weaker than Dragon Knight and can only contract and summon a small sword.
Kamen Rider Dragon Knight
Kit Taylor is a young adult who lost his father when he was a boy. Since then, he has been framed for many "misunderstandings" and has gained a reputation as a thief. He was placed in a foster home until he turned 18. From there, he makes his way to the apartment he spent his childhood in and found an Advent Deck that opened his senses to the presence of the monsters abducting people. He gains the ability to transform into the second Kamen Rider Dragon Knight armed with the Dragon Advent Deck that he obtained. He would later meet Len (Kamen Rider Wing Knight), with whom he agreed to help fight Xaviax's monsters in the hopes of finding his father. He did so after failing to heed Len's advice about re-establishing the Contract with the Advent Beast associated with the Deck, Dragredder, by activating the Contract Card in the Deck and fully reactivating his Dragon Knight armor powers. He nearly got duped into helping Drew (Kamen Rider Torque) before his true motive is revealed. After discovering the truth about the Advent Decks, Len believes that Xaviax probably played a part in helping Kit find the Advent Deck but Kit believes that he was guided here by his father and it was by his own will that he became Dragon Knight. After fighting for a long time, becoming more experienced and even becoming a threat to Xaviax, Len decides that Kit should replace Adam and become a true Kamen Rider, and not just an Earth substitute. However, the process will involve leaving Earth behind for good. Though honored, Kit decides to wait to answer until he feels he's thought it through enough. Later, when Kit confronts Axe for the first time, he tries to vent Axe, but can't find it in himself to do so. This would immediately haunt him as Axe holds him back, not allowing him to stop JTC from venting Chris. He is later confronted by the Cho brothers who intimidate and defeat him easily, but don't vent him. After receiving a message from JTC about his father, Kit and Maya both go to him only to run into a trap consisting of JTC and the Cho brothers. Kit successfully repels them and is able to vent Albert, leaving Danny furious. He begins to feel remorse for venting Albert, as he had purposely never vented anyone before that point. Following Albert's venting and Kase's return, he begins to feel useless, due to losing to both Danny and Kase and hearing his dad saying that he disapproves of Kit's actions. He is then attacked and pushed through a mirror by a mysterious Kamen Rider with the same armor as Dragon Knight but black. However he wakes up discovering that the fight with the mysterious rider was but a dream. He is then approached by Michelle Walsh who identifies him as Dragon Knight. Upon evading her and getting to the bookstore, he, Maya, and Trent discover the information was downloaded. Following this incident he goes off to fight attacking monsters to discover Len and Kase taking them out quickly. He leaves angrily with Kase noting the similarities between him and Adam (stating that it was his attitude was how it started before betraying the others) but Len believes otherwise. Going off to visit his father again he finds Xaviax waking up his father but only for a short time. Kit discovers that everything that has happened to him thus far was because of Xaviax and that he was manipulating his father. Xaviax gives him a very simple offer, vent Wing Knight and Siren to bring his father back. Afterwards he has another nightmare this time becoming the black rider and venting Wing Knight and fighting Siren before waking up. While reflecting he is once again confronted by Danny. When Danny got the upper hand, he sees JTC vent him and hinting towards Kit's conversation with Xaviax. He talks about this to Len and Kase and decides to go against Xaviax saying that saving his dad through those means is wrong and is ready to become a real Kamen Rider. When going to inform his father of his future course of actions, he is kidnapped and arrested by the No-Men. They trick him into battle against a mirror monster to assess his skills as a Kamen Rider. Michelle Walsh later interrogates him until he craftily escapes using a reflection from a spilled glass of water. He finds a Mirror Monster on the way out and manages to defeat it, but ends up attacked by Kamen Riders Strike and Wrath. He injures his leg in the fight, but Len and Kase save him in time and manage to escape. They later regroup in the bookstore, where Kase heals his injured leg. While regrouping, Kase shows Kit his Survive card as they engage Strike and Wrath once again. Kit, who was fighting JTC and is about to get vented, is saved by Len. They both witness JTC capture Metalgelas and Evildiver and unite them into Genosider. Overpowered by Wrath and Strike, they fail to save Kase from being vented. Both wanting revenge for her, they go after JTC, with Kit finding him first. After surviving his Final Vent, he watches Len use his Survive Mode, venting Strike in the process. Len and Kit chase after Wrath both using their Survive Modes. When Len is cornered, Kit readies his Final Vent, but after using too much energy, Survive Mode deactivates at an inopportune moment. In a final desperate attack to save Len, Kit uses his normal Final Vent only to miss and get hit with Wrath's Final Vent. He ends up being vented by Wrath, making him the tenth Rider vented in the series. Xaviax steals the Dragon Knight deck and claims that he has a surprise waiting for Len and gives the Dragon Knight deck to the original owner, Adam. When Eubulon is revived, Kit is rescued from the Advent Void.Waking up, he finds Kase and Eubulon, who is weakened from traveling through the Advent Void, and is given the Onyx deck. He was initially put off due to his dream, but Kase and Eubulon reassure him that those were only nightmares (Chance states that this is the Advent Beast's rage). Taking the deck he finds Len and assists him in taking out some of Xaviax's monsters, reuniting with him and meeting some of the Ventaran Riders, though he was initially wary of them due to his experience with their Earth counterparts. After learning who they are, accepts them as allies. He soon goes off to save Maya when Eubulon senses that she's in danger. He meets up with Adam, but is not easily swayed by his desire to return to the Riders. They argue about how their situation with Xaviax is worse, and both mirror twins activate their Rider forms and fight. Kit overpowers Adam and is about to vent him until Eubulon intervenes not wanting Kit's nightmare to turn into reality in which he vents someone out of anger. He returns with Maya, with Eubulon and Adam following.
Kamen Rider Onyx
Kamen Rider Onyx is a dark copy of Kamen Rider Dragon Knight armed with a black Dragon Advent Deck. He first appeared to ambush Kit and knock him into Ventara. When Kit is taken down by Onyx, it turns out to be a nightmare. The next time Onyx shows up is actually Kit (as Dragon Knight) retransforming into the black-armored Onyx venting Wing Knight and confronting Siren. However, it turns out to be just another nightmare. In episode 34 Kit will return from the Advent Void and become Kamen Rider Onyx. Onyx originally represented the struggle that Kit was going through, confronting Onyx when he was feeling useless because of his jealousy towards Kase and using Onyx's power when confronted by Xaviax about his father. With the exact same design and deck, Kamen Rider Onyx has the same combat potential as Dragon Knight, a balanced rider with a variety of cards at his disposal using his own dragon to help fight. When Eubulon is revived, Kit is rescued from the Advent Void. Waking up, he finds Kase and Eubulon, who is weakened from traveling through the Advent Void, and is given the Onyx deck. He was initially put off due to his dream, but Kase and Eubulon reassure him that those were only nightmares, with Chance and Price later stating that this is an internal reaction to the Advent Beast imposing its will on its user. Kit accepts their assurances and assumes the role of Kamen Rider Onyx. Taking the deck he finds Len and assists him in taking out some of Xaviax's monsters, reuniting with him and meeting some of the Ventaran Riders, though he was initially wary of them due to his experience with their Earth counterparts. After learning who they are, he accepts them as allies. He soon goes off to save Maya when Eubulon senses that she's in danger. He meets up with Adam, but is not easily swayed by his desire to return to the Riders. They argue about how their situation with Xaviax is worse, and both mirror twins activate their Rider forms and fight. Kit overpowers Adam and is about to vent him until Eubulon intervenes not wanting Kit's nightmare to turn into reality in which he vents someone out of anger. He returns with Maya, with Eubulon and Adam following. He listens to Adam's story but is still not convinced. He is ordered to wait with Kase in case Xaviax finds their base. He feels frustrated about waiting and talks to Kase about Adam. Later, when Kit begins to trust Adam a little more, he tells Adam how Xaviax tried to trick him by using his father. When Maya realizes something is wrong with Adam, Kase and Kit follow Len and Adam and find the both of them fighting. After their fight, Adam reveals that he had given the virus to Xaviax and that he developed an anti-virus. While his respect for him dissipated, he realized that they still needed him. Before going off to the final battle, he reaffirms with Kase that he trusts Adam now that he's up front and feels that he is now trustworthy. Kit and Kase put up enough of a distraction for Trent and Maya to allow the Riders to infultrate Xaviax's base. They fight their way into the room where Xaviax and Eubulon are fighting. Together, Kit, Adam, Len and Kase all fight Xaviax but he proves too strong. Soon, Eubulon brings the the six remaining Riders from the Advent Void and with all 13 Kamen Riders using their Link Vent, destroy Xaviax once and for all. During the Epilogue, Kit inherits the Dragon Knight deck officially becoming the true Kamen Rider Dragon Knight, thus becoming the only active Earth Kamen Rider and making the Onyx deck inactive. Eubulon also cures Frank Taylor who now knows of Kit's adventures. But as reminants of Xaviax's army remain as well as the potential dangers of the other worlds behind the mirrors, Kit Taylor, along with Len, Kase and the other Kamen Riders, continue to fight to protect Ventara and Earth as Kamen Rider Dragon Knight.