LAZ iCON - Season 1 (2021)

The thirty-five contestants are divided into seven teams of five. After each team performance, the judges score each contestant individually and the contestants are given the opportunity to choose to give a special performance showcasing a skill. Depending on that performance, they may lose or gain points. The top-scoring contestant from each team advances to the upper tier and is safe from elimination in the next mission.

After all teams have performed and seven top-scoring contestants have been selected, it's revealed that the top fifteen overall best-performing contestants will be ranked and placed in the upper tier. In the next mission, the fifteen Upper contestants have the opportunity to choose a contestant among the lower-ranked contestants to partner with, beginning with the first-ranked contestant. The partners' scores will be combined and the teams will have the opportunity to choose their next song in the order of their newly combined rank. Of course, with thirty-five contestants, this leaves five unpartnered contestants behind.

The trainees perform international songs. Each pair performs one song alongside two other pairs. For each song, the pair that earns the highest score from the online audience advances to the upper tier. In the end, the remaining pairs are selected and all are ranked by the judges. Beginning with the highest ranked, the pairs chose third members from the lower tier who will join their team in the next mission.

This week's mission is OSTs. With two teams to a song, the online audience again selects the top-ranked teams of each performance. This week, a second-ranked team beats out a top-ranked team from another performance. After the day's final ranking, the teams are asked to select two new teammates.

The trainees perform trending songs.

All thirty-five trainees audition for centre positions in their group performance. After the show, the top twenty-five contestants are revealed beginning with the twenty-fourth place, cutting ten trainees from the programme. After the elimination, the trainees select their next song in ranked order. There are two singing-focused performances, two dance and one rap to choose from.

The groups each perform with a professional in the industry. Paired with the singing groups are Third Tilly Birds and Da Endorphine, respectively. The dancers are Grand Kornpassorn and Chin Chinawut and OG-ANIC joins the rappers. Five contestants are selected as the top performers.

A casual round of games takes place before the next eliminations. Only fifteen people are selected, from fourteenth ranked to first before revealing fifteenth place. Baifern Pimchanok arrives in the end to announce a surprise "Mission Resurrection" taking place the following week. The top fifteen select their next performances in order from fifteenth to first. However, higher-ranked trainees are able to replace performers from already full times if they choose.

The previously eliminated trainees are given the opportunity to perform for the opportunity at resurrection. After three group performances, three trainees are selected. The selections are made first by online voters, then the remaining trainees followed by the judges. After the three return, the previously formed teams each select a resurrectee to join their next and final performance.