Shadow Line

Baron Nero Baron Nero
Baron Nero is the acting leader of the Shadow Line in Emperor Z's absence whose Shadow Creeps serve him by targeting multiple stations at once to gather enough darkness to bring Z into the human world, with some directly participating in Nero's various schemes. Despite learning of Z's obsession with light, Nero remains loyal to his leader, believing the obsession to be a phase before resolving to help him consume the world's light amidst verbal abuse from Marchioness Mork. During the Darkness Decline, Nero pilots a Cho-Cryner Robo to protect Castle Terminal from the ToQgers before his mecha is destroyed by Build DaiOh. After being mortally wounded by ToQ 6gou in a duel, Nero sacrifices himself to heal Z's injuries.

In battle, Nero is a skilled melee fighter who wields the Gun Stick cane gun and the Boomerang Top Hat, which he can use like a chakram or to fire a dark energy beam.
Debut Episode: Episode 1
Voice Actor: Jun Fukuyama

Madame Noa Madame Noa
Madame Noir is the secondary leader of the Shadow Line whose Shadow Creeps focus on gathering high-quality darkness to refine her daughter, Miss Gritta's, beauty and prepare her for her upcoming wedding to Emperor Z to secretly gain the throne through her. After Z absorbs Gritta and thwarts her attempt on his life however, Noir is forced to submit to him. When Marchioness Mork moves into Castle Terminal, Noir tries to prove herself by using her Control Black Feathers to turn citizens into berserkers. While the plan fails, she learns Gritta is still alive inside Z and bides her time by using less capable Shadow Creeps to gather minimal amounts of darkness until she can free her. After freeing Boseki Shadow during the Darkness Decline, Noir is shocked to learn Gritta does not want to leave Z, who blasts Noir out of Castle Terminal. Grievously injured, she joins forces with General Schwarz and ToQ 6gou to free Gritta before Noir is killed by Z.

In battle, Noir wields the Gun Parasol, which functions as a beam/machine gun, sabre, and shield.
Debut Episode: Episode 1
Voice Actor: Aya Hisakawa

General Schwartz General Schwartz
General Schwarz is the Shadow Line's military leader who is obsessed with building the Shadow Ressha forces to deal with the ToQgers once he obtains enough intelligence on them and a former friend of Akira Nijino's. Additionally, Schwarz is aware of Miss Gritta's feelings for him, promising to tell her at a later time. Before he can do so, Emperor Z absorbs her during their wedding and knocks Schwarz into a nearby river, where the latter is presumed dead and secretly vows revenge. In pursuit of his goal, Schwarz tricks the ToQgers into forming an alliance with him so he can steal the Drill Ressha, only to learn Gritta is still alive within Z's body. After being confronted by Nijino, Schwarz agrees to return the Drill Ressha in exchange for the former's services during the Darkness Decline. Despite rescuing Gritta, Schwarz learns too late that he endangered her further and sends her away in his personal Cryner while he attempts to fight Z-Shin, only to suffer fatal injuries. Before he dies, Schwarz taunts the emperor with the fact that the former had found his own light before he did.

In battle, Schwarz is a capable fighter who wields the General Black Iron Sword. Additionally, his personal Cryner Robo is armed with twin forearm-mounted spikes and a sword.
Debut Episode: Episode 1
Voice Actor: Haruhiko Jo

Miss Gritta Miss Gritta
Miss Gritta Miss Gritta is Madame Noir's daughter who is being brought up to become a bride for Emperor Z once he enters the world, though Gritta is secretly infatuated with General Schwarz after receiving a Rose Handkerchief that he dropped and said she could keep. Upon meeting Z, she finds him frightening and forms a secret alliance with Schwarz in a failed attempt to evade the wedding. As the event gets underway, she absorbs him for his powers as part of her mother's scheme to take the throne from him and becomes the Empress of Darkness. Becoming more mature as a result of Z influencing her actions, Gritta helps Schwarz attack the ToQgers, leading to her taking a fatal blow meant for him. As he attends to her well-being, she expresses her feelings for him, only to be absorbed from the inside by Z for her inner light. Though presumed dead, Gritta is later revealed to still be alive, functioning as a hindrance to his full potential. Amidst the Darkness Decline, she gradually begins to take over his body before eventually being freed by Noir and Schwarz, only to watch them die in front of her after he sends her away in his personal Cryner for her own safety. Intent on saving Z from himself and averting further deaths, she seeks out the ToQgers' help in covering her while she takes over Castle Terminal's controls and move it towards the dark depths. She later takes the incorporeal Z back to the Shadow Line.

During the events of the V-Cinema They Went and Came Back Again Ressha Sentai ToQger: Super ToQ 7gou of Dreams, Gritta unknowingly creates a time paradox that allows the ToQgers to defeat Archduke Hei.
Debut Episode: Episode 1
Voice Actor: Noriko Hidaka

Emperor Z Emperor Z
Emperor of Darkness Z is the human-like ruler of the Shadow Line who embodies the purest form of darkness and was responsible for dragging Subarugahama into the developing Shadow Line. Ironically, he develops an unhealthy obsession with light due to coming into contact with Right after being attracted to Subarugahama's festival lights, which reflects in his Shadow Creeps' unique ability to produce light or possession of a glittering quality. Due to initially lacking a full physical presence in the human world, he tasks his followers with gathering darkness from human hearts to expand the Shadow Line under the belief that those he deems loyal and valuable will be spared. Upon his arrival from the World of Darkness, he recognizes the ToQgers as the children who escaped Subarugahama, develops an interest in Right, and reveals himself to him, though Z is unable to remain in the light for extended periods of time.

After allowing Miss Gritta to absorb him before eventually absorbing her in turn to obtain her "light" and remove his weakness, he intends to take the ToQgers' light next. However, he discovers that he could not fully absorb Gritta due to her keeping his full power in check, resulting in him assuming a flawed version of his monstrous true form and becoming a moody loose cannon. Amidst the Darkness Decline and while fighting General Schwarz and ToQ 6gou, Z briefly loses control over Gritta, who tries to warn the ToQgers not to free her. However, Schwarz and Noir do so, unknowingly allowing Z to achieve his full potential and his true form, Z-Shin before killing Noir and Schwarz. Accepting he can never have the light as his own, Z learns part of his being entered Right's body. This combined with learning Gritta was taking pity on him convinces Z to mount an assault on the world and drown it in darkness, destroying any remaining light, while sparing Right long enough to see the Dark Behemoth consume everything in its path. After the Dark Behemoth is destroyed and he is mortally wounded by the ToQgers, Z absorbs his remaining followers to heal his injures and increase his power before he is defeated by Right as Rainbow ToQ 1gou. Seeing a rainbow before he explodes in a storm of darkness, Gritta retrieves Z's essence and takes him back to the Shadow Line to re-constitute himself in peace.

In battle, Z wields the Imperial Killer Sword in his flawed and true monstrous forms. While fighting Schwarz and ToQ 6gou, Z steals the latter's transformation equipment and briefly becomes Z 6gou. Additionally, Z possesses a white Imperial Cryner, whose Cryner Robo mode is armed with the Imperial Long Sword and the Darkness Wave Twin Super Ressha Cannons, which can be used to perform the Darkness Fall attack.

Marchioness Mork Marchioness Mork
Marchioness Mork is the oldest member of the Shadow Line who personally raised Emperor Z, resulting in her behaving informally around him despite their status, and was originally in charge of overseeing Shadow Towns via her Keepers before moving into Castle Terminal due to Z's obsession with light and to quell sedition among their ranks. Mork continues to loyally serve Z before eventually allowing him to absorb her to heal his injuries.

In battle, Mork is a formidable combatant despite her age and wields the Marchioness Mic Rod, which can fire green energy. Additionally, her personal Cryner Robo mode is armed with a larger version of her Marchioness Mic Rod and train horns on its shoulders capable of firing supersonic beams. Debut Episode: Episode 1

Kuros Kuros
The Kuros are train robber-themed foot soldiers who support the Shadow Creeps, are armed with Tommy guns that can transform into hatchet-like weapons, and pilot Cryners.
Debut Episode: Episode 1