PSG Talon AD carry Wong "Unified" Chun Kit will miss the entirety of the 2021 Mid-Season Invitational due to health complications. PSG Talon announced that Unified had been dealing with pneumothorax over the past several weeks, which had been kept private at the player's request, but that ultimately, the tough decision to travel to Iceland and compete without Unified while he recovers was the one that was made. 

Riot Games has allowed PSG to play with AD Carry Chiu “Doggo” Tzu-Chuan at MSI 2021, who is on loan from fellow Pacific Championship Series organization Beyond Gaming. Beyond Gaming finished 2nd in the 2021 PCS Spring Playoffs, losing to PSG Talon in the finals by the way of a 3-0 sweep. It was the second time PSG Talon had won the PCS, the first being in the summer of 2020. 

PSG is more than familiar with last minute roster complications before an international tournament. At the 2020 World Championship, visa issues delayed the necessary quarantine required to compete during the global COVID-19 pandemic for its South Korean jungle/mid duo.

Kim "River" Dong-woo and at-the-time mid laner Park "Tank" Dan-won were unable to compete for the entirety of the Worlds 2020 Play-in. In addition, Unified himself also missed the first week of the Play-In. As a result, ahq eSports Club loaned jungler Hsiao "Kongyue" Jen-Tso and mid laner Chen "Uniboy" Chang-Chu to PSG Talon, and Machi Esports AD carry Chen "Dee" Chun-Dee stood in for Unified for the first week of the Play-In.

PSG Talon has been seeded into Group B of MSI 2021 alongside MAD Lions, fastPay Wildcats, and paiN Gaming — the champions of Europe, Turkey, and Brazil, respectively — and while the PCS champion initially looked like an easy top 2 seed, competing without Unified will certainly present a new challenge to the squad when the competition kicks off in Iceland next month.