A pre-petrification human and was a reporter before the petrification event. She was revived by Tsukasa, someone she heavily admires, to help locate strong and capable people for increasing the power of the Tsukasa Empire. After the collapse of the Empire, she joins and helps the Kingdom of Science with her information gathering and documentation skills.

A reporter for the Kingdom of Science.

Hanada Nikki is a survivor that was revived by Tsukasa. She later defected from the Tsukasa Empire and joined the Kingdom of Science. Her unofficial role in the Kingdom of Science is the disciplinary, as she is constantly shown keeping people like Magma and Yo in line, stopping them from doing violent or shortsighted things. She is also a member of the Power Team.

Unofficial disciplinary of the Kingdom of Science.

Rei's brain is comprised of 60 smartphone motherboards, filled with useful information regarding astronomy, astronautics, earth science, and a surprising depth of knowledge about Evangelion and Shonen Jump characters. Rei lacks common-sense programming and basic human biology info, such as average human lifespans. Rei has no ability to lie, and no concept of what is appropriate and inappropriate to say in a conversation. Rei is faithful, thoughtful, highly determined, resourceful, and inventive.

An AI Robot invented by Ishigami Byakuya.

Jaiden Dittfach, known online as Jaiden Animations, is an American YouTuber and animator, known for her story-time animations. Her videos explore a variety of topics, spanning from her experiences to personal stories. She also creates videos centered on video games. Her four YouTube channels have collectively amassed over 12.3 million subscribers and over 2.2 billion views as of December 2022. At the 10th Streamy Awards in 2020, she received a Streamy Award in the Animated category.

YouTuber known for her storytime animations.

Isabelle is the head of the Civic Consultation Counter at the Resident Services building. She is here to help you with all of your Animal Crossing: New Horizon island building needs. She can provide many ideas to you regarding hotspots, villagers, and themes, as well as any other information that you might need to build your very own island.

ACNH Island Building Helper

Purplecliffe is an American gaming YouTuber and Twitch streamer who is mostly known for his wide variety of videos of him playing games in the Pokémon media franchise. He joined YouTube on August 15, 2014, but his earliest video is dated May 30, 2018.

YouTuber who makes Pokémon-related content.

Yakov was a doctor on board the International Space Station alongside his wife, Darya Nikitina. While in space, he witnessed the petrification of all human life on Earth's surface from the ISS. He later founded Ishigami Village alongside the other astronauts.

A doctor from the International Space Station.

A doctor on board the International Space Station alongside her husband, Yakov Nikitin. While in space, she witnessed the petrification of all human life on Earth's surface from the ISS.

Connie Lee was an American astronaut aboard the International Space Station alongside cosmonauts Darya Nikitina and Yakov Nikitin. She also witnessed the petrification of all human life on Earth's surface from the ISS.

An astronaut from the International Space Station.

Owner of the Nanami Conglomerate and an accomplished sailor. He lives a wealthy and lavish lifestyle, often seen as a greedy playboy who orders others to do his bidding. While he is arrogant and greedy, it is his greed that fuels his ambition, which is the cause of his great success.

A greedy sailor who desires everything he sees.

Ishigami Senku's adoptive father. He was an astronaut residing on the International Space Station in space when the mass-petrification on Earth's surface occurred. He is the main founder of Ishigami Village and the one who created the Hundred Tales.

An astronaut from the ISS and Senku's father.

Robert (born August 28, 1996 [age 26]), better known online as RadicalSoda, is a gaming YouTuber residing in New Zealand, specializing in commentary. He is known for formally making Markiplier fan-games and Five Nights at Sonic's, more recently known for reviewing Sonic games, and overall is iconic for his absurdist humor. In recent years, his style has honed in on comedic commentary and game reviews. He is primarily known for his Sonic content.

YouTuber who reviews Sonic the Hedgehog games.

Ari is a green-cheeked conure bird and the first pet of Jaiden Animations. He is also the star of her Twitter and Instagram account. She has had multiple YouTube videos dedicated to and featuring him.

Green-cheeked conure; star of Jaiden Animations.

A famous American songstress and NASA astronaut that boarded the International Space Station alongside Senku's father, Byakuya Ishigami, and witnessed the petrification of all human life on Earth's surface.

A famous American singer and NASA astronaut.

Ukyo is a modern-day survivor who was revived by Tsukasa Shishio. He is one of the Five Wise Commanders of the Kingdom of Science. He always proposes the use of non-violence, but will relent if not possible. Because of this, he will push to use Gen's mentalist trickery. Ukyo is in charge of intel gathering and security.

A sonar technician who worked for the SDF Navy.

Gen is an enemy-turned-ally of Senku's. Originally de-petrified by Tsukasa Shishio, he was sent to find Senku, only to defect to the Kingdom of Science. He's a greedy man who cares only about his own desires. He later becomes one of the Five Wise Commanders. He's the most strategic about how to carry out missions, often finding ways to avoid labor if he can. When it comes to enemies, Gen acts as a tactical forecaster.

The Kingdom of Science's mischievous mentalist.

A descendant of modern-day humans. She is Kohaku's elder sister and the daughter of Kokuyo. She serves as the priestess in Ishigami Village. She is a kind, gentle, and demure young woman. She previously had a submissive personality, but after making a full recovery from her illness, she is shown to be more optimistic and positive and even shows a more tomboyish side, immediately making a full dash running around the village. Despite this, she is still much more feminine than Kohaku.

The Priestess of Ishigami Village.

Jacob Rabon IV, better known by his online pseudonym Alpharad, is an American YouTuber, esports personality, and musician. He is best known for his gaming videos on the Super Smash Bros. series along with his participation in the fighting game community as a tournament organizer.

YouTube Gamer and Internet Funny Man.

One of the former residents of the American Colony. Always wishing for an intelligent boyfriend, she becomes enamored with Senku's smarts and character, shifting allegiance to the Kingdom of Science and in turn getting the chance to date the young scientist.

A medical student. Wants to be Senku's girlfriend.

Shamil Volkov was a Soyuz pilot on board the International Space Station. He arrived alongside Byakuya and Lillian as the new astronauts to the ISS. While in space, he witnessed the petrification of all human life on Earth's surface from the ISS.

A pilot from the International Space Station.

Senku is the defacto leader of the Kingdom of Science and the Village Chief of Ishigami Village, as well as one of the Five Wise Commanders. He is very skilled in both mathematics and science, having learned much about both subjects at a very young age. His biggest dream is to go to space.