Fantasy Boys is a South Korean reality competition show created by MBC. The purpose of the show is to form a 12-member boy group with the potential to chart on Billboard. 55 contestants were chosen out of 1,000 applicants from around the world, primarily from South Korea, China, Taiwan, Japan, Thailand, and the United States, and divided into three groups known as "grades". After the final episode, the top twelve contestants were selected to debut as members of the boy group Fantasy Boys.

Contestants

The English names of the contestants are presented in Eastern order in accordance with the official website.

List of Fantasy Boys contestants

The ages of all contestants are presented according to the Korean age system as of the start of the competition.

List of Fantasy Boys contestants

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Admission Evaluation (Episodes 1–2) After the producers in the Producer Zone watch the Admission Evaluation performances, they will evaluate them by either choosing them by selecting 'O' or rejecting them with an 'X'. If a contestant gets chosen by all producers, they get placed in Grade 1; if they are chosen by two to three producers, they receive Grade 2; and if they are chosen by only one or none of the producers, they are assigned to Grade 3. Grade 3 contestants' admission will be put on hold for the time being and they become candidates for elimination, while Grade 1 and Grade 2 passed the admission evaluation and can enter the dorm.

List of Fantasy Boys contestants

Bold numbers are contestants whose performances were partially or entirely unaired during the episode broadcast. Full versions of the performances will be released on Naver NOW after the Admission Evaluation ends.

First Semester – Idol DNA (Episode 2)

For the first semester, Jeon So-yeon served as the main producer. All the producers re-evaluated the grade for Grade 1 and Grade 2 contestants, with Grade 1 limited to 14 contestants. The pending admission for Grade 3 was selected based on the global vote. An early pass from the main producer was given during the interim check.

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Second Semester – Visual Mission (Episode 3–4)

Contestants are to rank each other by placing stickers on each other. The contestants with the most stickers have the advantage of choosing their choice of the team they want to join for the second semester's mission.

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For the second semester, Jang Woo-young served as the main producer.

A pre-mission 'Fashion Runway' will decide which member of each team will have the first heart fluttering part. Each team will stand on the runway and be given time to show off their charms. The boy who gets his photo taken the most by the Fantasy Makers will be assigned the first heart fluttering part for their team.

The second heart fluttering part will be assigned by the producers during the interim check.

The first place of each team will receive a benefit of 2,000 points.

Third Semester – Idols' Expertise Field Mission (Episode 5–6)

For the third semester, Jin-young served as the main producer.

Each song has a set number of contestants for each position: Dance, Vocal and Rap. Vocal positions take the vocal and ad lib sections. Dance positions take the dance break section. Rap positions must show their capabilities through rap making.

The first three contestants who are able to pick their choice of song were based on a pre-match unknowingly carried out in the morning before the mission announcement. The highest karaoke scores determined first place for vocal and rap positions, and dance position's first place was chosen by Random Play Dance. The first three contestants is as follows: Moon Hyun Bin (dance), Hikaru (vocal), and Seo Sang Woo (rap).

The remaining order of contestants to pick their chosen song & position were based on a lucky draw. Contestants can also challenge an already occupied position through a 1:1 battle, where the other members of the same song can chose whom to take into their team.

The contestants who take first place in either vocal, rap, or dance positions over the other contestants in the same position will receive a benefit of 10,000 points each. The members of the same team as the first place contestants will also receive a benefit of 5,000 points each.

Total individual points are added in the following way: Onsite audience votes are multiplied by 500, plus online global voting score, plus any benefits gained from winning first place (position benefit and team benefit).

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Fourth Semester – Teamwork Mission (Episode 7–8)

For the fourth semester, Kang Seung-yoon served as the main producer.