Drive Knight/Synopsis

History
Drive Knight was named by the Hero Association after a direct request from himself.

Although not explicitly stated, it's heavily implied that Drive Knight is a cyborg or at least used to be human. He claims to have a similar background to Genos in that The Mad Cyborg also destroyed his village.

Alien Conquerors Arc
Drive Knight is first shown at the S-Class Hero Association meeting. After the Dark Matter Thieves attack A-City, the heroes go outside to confront them. Drive Knight, Genos, and Child Emperor watch Tatsumaki besiege the alien spaceship. Seeing that his help is not needed, Drive Knight states that he has errands to run. Before walking off, he tells Genos that Metal Knight is his "enemy", and that Genos will soon find out what he means.

Super Fight Arc
After a sudden increase in monster attacks in the cities, Drive Knight confronts a group of monsters of the Monster Association. He complains that the Hero Association's data is insufficient and interrogates the monsters to find where they are coming from. He uses Tactical Transformation: Silver to kill two of the group and demands information on the monster influx from the last. Drive Knight gives the final monster the choice to share information for a more painless death, saying he does not allow those who have seen his Tactical Transformations to live.

Monster Association Arc
Drive Knight relays several pieces of extracted information to the Hero Association which Sekingar relays to the Hero Association board: After transmitting this intelligence, Drive Knight leaves to investigate the Monster Association on his own and loses contact with the Hero Association. Later, Drive Knight shows up to the raid and interrupts the fight between the heroes and Nyan. He ignores Nyan's inquiry about his identity and leaps towards him on the offensive. Drive Knight uses his Tactical Transformations to keep Nyan busy, leaving the cat monster unable to retaliate. The two engage in an intense scuffle. Nyan then slips into the cracks between Drive Knight's armor and attacks him from the inside. However, Drive Knight raises his body temperature to an extreme degree and burns Nyan, forcing the monster out. Drive Knight then grabs Nyan in a chokehold, stabs the monster through the lower torso, and incinerates it. He announces the defeat of Nyan and walks to Sekingar with the body of the monster in his hand. Sekingar is amazed by Drive Knight's swift victory, but he informs him that he spent a while watching Nyan fight the other heroes before he intervened and Nyan's overconfidence was another large factor in his victory. Sekingar then asks about his mysterious lack of communication with the Hero Association, and Drive Knight explains that he was behind the Monster Association's lines gathering data for later, similar to what he just did with Nyan. He also implies the existence of a traitor in the Hero Association, and accuses Metal Knight of being the one. He explains that he believes Metal Knight had his drone defeated by Orochi on purpose so that the Monster Association could hack it and gain access to his weapons, then attack the Hero Association using them, in order to keep the blame off himself. Despite this, Sekingar is skeptical and is somewhat suspicious of Drive Knight's numerous unexplained actions. Drive Knight asks Sekingar if Blast would arrive if the Hero Association was under attack. Sekingar doubts this and decides to call the headquarters to make sure they're ready in case of such an attack, but he is stopped by a laser from the nearby G5, which severs his hand in the process. Drive Knight claims that he can't fight G5, having used all of his power during his fight with Nyan and the dozens of hours of reconnaissance work. Drive Knight asks Sekingar to call Blast, but he says only the higher-ups of the Hero Association can do that. Suddenly, Genos appears and destroys G5 before it can attack Sekingar.
 * The source of the monster surge is the Monster Association.
 * Their purpose is to oppose the Hero Association.
 * They possess a method of turning humans into monsters.
 * The name of their leader is "Monster King" Orochi.
 * The suspected location of their hideout is Z-City.

Genos offers to bring Sekingar and the other heroes defeated by Nyan out of Z-City to safety. He also notices that Nyan is still alive in Drive Knight's grasp, but Drive Knight explains that he wants him alive so that he can dissect and study the monster for research. Drive Knight is later seen observing the battle between Tatsumaki and the Psykos-Orochi fusion unfold from afar. He expresses his interest in collecting a sample of the fusion but due to the prior battle between him and Nyan, his remaining energy reserves are extremely limited. The ground all over Z-City has ripped apart due to the highly powerful psychic move performed by Tatsumaki, and due to this, Drive Knight quickly notices a large damaged underground energy cable beneath him. In order to join the battle against the fusion, Drive Knight proceeds to take the energy from the cable by sticking his hand into it. This causes a major power outage in the nearby area but allows Drive Knight to arrive at the scene. Drive Knight interrupts the battle between the two espers in his Flying Chariot form by firing two energy beams at Psykos. He proceeds to chase Psykos and Orochi, who are now in a jet form, in order to obtain a sample. He continues to pursue the jet, unleashing a series of blasts at it, but all of his attacks are countered or dodged. He then gets hit by an attack from the jet, but is apparently able to withstand it and then momentarily transforms into a motorcycle and accelerates down a tower before changing back into a jet. When Psykos launches a set of attacks at Tatsumaki, Drive Knight transforms into his Bishop form and intercepts 2 of the 3 projectiles, with the third being blocked by Genos. He then transforms back into plane form and chases Psykos into a tunnel. She attempts to deter him by collapsing the ceiling and unleashing a series of energy blasts, but Drive Knight manages to avoid each obstacle by transforming or blasting through it. When Psykos attempts to attack Genos, who jumped on her jet, Drive Knight jumps on the jet as well in his Bishop form, shielding Genos from the impact. She uses a stronger blast to knock them both off, but Drive Knight proposes that they fuse. Genos agrees, and Drive Knight uses his remaining to create the fusion Tactical Combination: Promoted Rook. The fusion attacks Psykos and Orochi with a large sword, stalling her long enough for the other heroes to attack.

After Orochi's defeat, Drive Knight notices that Tatsumaki's giant barrier which was used to surround the Z-City has disappeared, and states that he has completed his objective in collecting a sample of Orochi's DNA, ruthlessly dropping Genos from great height regardless of the latter's overheating condition and simply leaving.