Squid game

456 people, most of whom are struggling financially, accept an invitation to participate in a mysterious children's game tournament. It quickly becomes clear that this is a survival tournament. After a player is eliminated, the prize increases by 100 million won, meaning the winner will receive 45.6 billion won. However, the stakes in the games are deadly high.

Slow and steady wins the race;
Sugar honeycomb;
Tug of war;
Marble game;
Glass bridge;
Squid game.

The players wore emerald tracksuits consisting of joggers with stripes, zip-up sweatshirts, and white T-shirts with their numbers written on them. They wore basic white sneakers.

Security Guards, commonly referred to as "Pink Soldiers" or "Masked Men," are the staff who administer, maintain, and enforce the rules of the Squid Games on behalf of the Game Master.
All security guards wear the same basic attire to maintain anonymity. This includes the now-iconic pink hooded jumpsuit, black gloves and boots, and a mesh mask with one of three symbols—a circle, a triangle, or a square, depending on their rank.
Security guards are divided into several types:

Managers are ground commanders who act under the direct orders of the Controller. Managers are tasked with organizing security, relaying information to players, and disciplining soldiers who become unresponsive.

Soldiers are armed enforcers who eliminate eliminated players and prevent participants from breaking the rules of the Game.

Workers are "civilian" employees. They are tasked with menial tasks: disposing of corpses, preparing games, maintaining the facility, and distributing food. Their role in the Squid Games does not require them to wield weapons or speak.

All the guards display the same indifference toward the participants, as their hidden identities and uniforms are a common method of dehumanization. The guards do not react to the deaths of the participants with body language.

With the exception of managers, guards are not allowed to leave their rooms without permission or interact with each other in any way, displaying affection. They rarely interact with each other due to their strict regime and adherence to internal rules. A sign in worker #29's room reads:
"DO NOT REMOVE YOUR MASK OUTSIDE THE ROOM.
DO NOT CONTACT WITHOUT PERMISSION.
DO NOT LEAVE YOUR ROOM WITHOUT PERMISSION."
Therefore, it is unclear whether the guards at the Squid Games are working voluntarily or against their will.

Song Ki-hoon / Gambler #456: A chauffeur and gambler. He lives with his elderly mother and struggles to provide for his daughter, Ga-young. He gambles to pay off his debts to creditors.

Jo Sang-woo / Player #218: Head of the investment group at a holding company. A friend of Ki-hoon's since elementary school, he graduated from Seoul National University, where he was considered a gifted student. Police are looking for Sang-woo for stealing money from clients.

Kang Sae-byuk / Player #067: A young North Korean refugee who needs money to help a middleman find and bring her mother, who is still in North Korea, to South Korea.

Oh Il Nam / Player #001: An elderly man with a brain tumor who prefers to play the game rather than wait for death in the normal world.

Hwang Joon Ho: A young police officer who becomes one of the game's security guards to find his missing brother.

Ali Abdul / Player #199: A migrant worker from Pakistan, he joins the game to support his wife and one-year-old son.

Jang Deok-soo / Gambler 101: A gangster who lost a huge sum of money in a Philippine casino and is in debt to his creditors. He is Kang Sae-byuk's personal enemy.

Han Mi Nyeo / Player #212: A hysterical and cunning woman who calls herself a poor single mother.

Byung-gi / Player #111: A doctor who secretly collaborates with a group of security guards who trade the organs of deceased participants in exchange for information about upcoming games.

Sang Hoon / Player #119: The player who got the umbrella in the Sugar Honeycomb game.

Do Jung-soo / Player #017: A glassblower with 30 years of experience working at a glass factory.

Player #244: A pastor who rediscovers his faith in God during the game.

Park Joo-eun / Player No. 369.

Lee Doo Seok - Player #062: A high school math teacher.

Christian Lagahit - Player #276: A player who joins Ki-hoon's group in the tug-of-war game.

Kwak Cha Hyun - Player #278: A player who joins Deok Soo's group.

Yoon Yeon-gyun - Player #040: A player who joins Deok-soo's group.

Kim Dong Won - Player #303: A player who joins Deok Soo's group. Eliminated in the "Kganbu" game for an unknown reason.

Lee Jiha - Player #070: A player who came to the games with her husband.

Kim Yoon Tae - Player #069: A player who participates with his wife, Player #070.

Kon Yu is a recruiter who selects participants for the game.

Mr. Kim: A loan shark and career criminal to whom Gi Hoon owes a large sum of money.

Park Jung-bae: Ki-hoon's best friend. Like him, he's a gamer.

Oh Mal Soon: Ki Hoon's mother. She died of diabetes while her son was playing.

Song Ga Young: Gi Hoon's daughter.

Kang Eun Ji: Ki Hoon's ex-wife and Ga Young's mother.

San Woo's mother: Owner of a seafood shop.

Kang Chul: Brother Sae Byuk.

Lee Han Sol - Player #324: Best friend of Player #250. He was the first contestant eliminated from the game.

Park Ji-hoon - Player #250: Best friend of Player #324. He was the second contestant eliminated from the game.

Min Tae Yul - Player #271: The player who didn't get any food.

John D. Michaels - VIP Guest No. 1
Daniel S. Kennedy - VIP Guest No. 2
David C. Lee - VIP Guest #3
Jeffrey Giuliano - VIP Guest #4
Stefan Moth - VIP Guest No. 5
Michael Davis - VIP Guest #6