Player Info
| Rank | Challenger 1,186LP |
| Role | Support  |
| Most Played |    |
| Name | Kim Joo-sung (김주성) |
| Birthplace | South Korea |
| Residency | Korea  |
| Team | Immortals  |
| Birthday | November 27, 1994 (30) |
| Contract | November 16, 2021 |
| Follow Pro | |
Accounts
| [KR] Let me sup#KR1 | Ch 1,186LP |
| [NA] Wekin Poof#NA1 | Master 248LP |
| [NA] HkTVQSOh1wJlYO0B#NA1 | Diamond II |
| [NA] Padaria Cremosa#NA1 | Unranked |
| [KR] 4444994del#KR1 | Unranked |
| [EUW] I love Hardship#EUW | Unranked |
| [KR] Me Korean#KR1 | Unranked |
| [NA] Olleh#IMT | Unranked |