After failing to qualify for the League of Legends Champions Korea (LCK) through Challengers Korea (CK) in the year prior, Griffin was finally able to do so on April 14, 2018, defeating veteran organizations Kongdoo Monster and MVP in the LCK 2018 Summer promotion tournament.

[5] The team quickly rose to the top of the standings, placing second in the regular season and playoffs after losing 2–3 to KT Rolster in the finals.

[13][14][15] Griffin was one of four LCK teams that competed at Rift Rivals 2019 LCK-LPL-LMS-VCS, which the league won on July 7, 2019.

[16][17] Griffin headed into the 2019 LCK Summer Split with a new top laner, Choi "Doran" Hyeon-joon, and finished the regular season in first place with a 13–5 record.

This placement secured the team a bye to the finals and a spot in the 2019 World Championship, as a series victory would give them a direct qualification as the LCK's first seed, while a series loss would still earn them the most championship points and qualification as the LCK's second seed.