Anan Kurose

Thirteen (13号), also known as the Space Hero (スペースヒーロ) is a Pro Hero who specializes in search and rescue, and a member of the U.A. teaching faculty.

Appearance
Thirteen's physical appearance is unknown because her entire body is hidden underneath her hero costume. The costume consists of a white space suit, a black helmet with white eyes and a pair of yellow boots.

Personality
Thirteen is a wise, well-mannered person that knows very much about the concept of how Quirks are an irrefutable part of the world and how they can be used for both saving and killing people. As a rescue hero, Thirteen has displayed how passionate they are about saving people through their teachings. They even developed their own training facility in the U.S.J to train future heroes in search and rescue tactics.

Thirteen has also shown themselves to be very brave. Despite not being a combat type, they don't hesitate to use their Quirk to fight against Kurogiri in order to protect their students.

History
A year prior to starting his teaching career, Aizawa was called into a meeting with Best Jeanist, Manual, Desutegoro, Snipe, Thirteen, Endeavor, Air Jet, Midnight, Ingenium, and Gunhead. They were there with an unnamed police officer to speak about the unwilling civilians injected with Trigger. The officer explained that the people in question were more of victims than villains. Endeavor argued that any public use of a quirk is illegal and that they should treat them as villains and let the police investigate the backgrounds of future captures. He said this is the only way to protect the innocent while not risking themselves through hesitating every time they see a new enemy. All Might, who was not present, had his reply to the problem delivered by Naomasa. He stated that he would assess the situation at the scene more carefully because as heroes they must not bring harm to innocent citizens. This was in direct opposition to Endeavor's answer greatly angering him.

Unforeseen Simulation Joint Arc
Thirteen first appears when Class 1-A is brought to the Unforeseen Simulation Joint for rescue training. At the U.S.J. Thirteen explains that Class 1-A will train their because the facility simulates all kinds of disasters and accidents. Class 1-A's homeroom teacher, Shota Aizawa asks Thirteen where All Might is, and they reply that he was doing too much hero work to make it on time. Before rescue training begins, Thirteen speaks to the students about the dangers of Quirks and why they're needed to be regulated as well as how the students will now be training to use their Quirks to save people. Thirteen concludes their speech by saying they hope everyone will understand how to wield their Quirks in rescue situations by the end of the exercise and thanks to the class for listening.

However, before the training exercise begins villains appear through a warp-gate. Shota tells Thirteen to protect the students and leaps into action. While trying to lead the evacuation for the students, Thirteen is confronted by a mysterious villain covered in black mist. He introduces himself as Kurogiri and asks where All Might is.

Thirteen tries to sneakily use their Quirk while he's talking, but they're unable to when two of the students attack Kurogiri. Katsuki Bakugo and Eijiro Kirishima seem to land an attack, but Kurogiri remains unphased. Thirteen pleads for the tandem to move out of their way, but Kurogiri capitalizes and uses his Quirk to separate the class by teleporting the students to several different places within the facility. Thirteen remains at the entrace plaza along with Tenya Iida, Ochaco Uraraka, Hanta Sero, Rikido Sato, Mina Ashido and Mezo Shoji.

Thirteen commands Tenya to use his Quirk to run to the school and alert the faculty of the attack because one of the villains is jamming their communications. Kurogiri overhears their plan and prepares to stop them, but Thirteen uses their Quirk to suck his mist body into a black hole.

Kurogiri commends Thirteen on their powerful Quirk, but also comments that they have little fighting prowess before he opens a warp-gate behind them and in front of him so that Thirteen ends up using their Quirk on themselves. Half of Thirteen's suit ends up disintegrated by Black Hole and they are incapacitated.

Eventually, All Might arrives, as well as the U.A. faculty members called by Tenya. They repel most of the villains, forcing Kurogiri and Tomura Shigaraki to try and escape. Thirteen is helped to their feet and they try to stop them using their Quirk, but they teleport away. Afterwards, Thirteen is brought to Recovery Girl to be healed. Detective Tsukauchi confirms that they recover from their injuries when he informs the students of their condition.

U.A. Sports Festival Arc
During the U.A. Sports Festival, Thirteen spectates the events in the faculty section of the stands. As the battle between Izuku and Shoto begins, Thirteen asks All Might if Izuku and Shoto are the ones that jumped in to save him at the U.S.J, to which he confirms.

Final Exams Arc
Prior to Final Exams at the end of the first years' first term, Thirteen meets with their fellow faculty members. They discuss changing the finals format from facing robotic villains to fighting against the teachers. Thirteen comments that this may be too difficult for the students, but they all ultimately agree on the change. Thirteen joins the teachers at the Final Exams practical portion test site to meet Class 1-A. Thirteen is placed against Ochaco and Yuga Aoyama.

In their battle, Ochaco and Yuga reach the escape gate but before they can go through it, Thirteen stops them with their Quirk. The duo holds onto a guardrail to avoid being sucked in. Yuga fires his Navel Laser from his knees (thanks to his hero costume) at Thirteen, but the attempt fails as Thirteen easily sucks in the laser. Ochaco randomly lets go of the guardrail (as the conversation between the two is unknown to Thirteen) and Thirteen stops using their Quirk to protect Ochaco from being turned to dust. Facing Thirteen directly, Ochaco uses the combat skills learned from interning with Gunhead and manages to pin down and handcuff Thirteen. Thirteen questions where her skills came from and the two students pass the practical test.

Quirk and Abilities
Black Hole (ブラックホール Burakku Hōru): Thirteen's Quirk creates a vortex that turns anything it sucks into dust. Thirteen uses their Quirk by releasing the fingertips on their gloves.

Unforeseen Simulation Joint Arc

 * Shota Aizawa & Thirteen vs. League of Villains: Lose

Final Exams Arc

 * Ochaco Uraraka & Yuga Aoyama vs. Thirteen: Lose

Trivia

 * Thirteen's introduction was on Chapter 13, Page 13.
 * According to the official twitter page, Thirteen's prototype was named No. 6. Their real name would be "Anakuro Hirooki" (穴黒央宙, literally "Black Hole" and "Middle Space").
 * They like museums and self-learning documentaries.
 * Their name along with their astronaut-themed look, is likely to be a reference to Apollo 13, NASA's space mission that is made popular by its troubles and the "Houston, we have a problem" line.

Quotes

 * (To Class 1-A) "Your powers are not meant to inflict harm. I hope that you leave here today with the understanding that you're meant to help people."