Kim "Shuttle" Yoon Joong is a former StarCraft progamer from South Korea who played Protoss for STX SouL. He retired from StarCraft II on 21 September 2012 in order to fulfill his mandatory military service and currently plays in amateur leagues. 
Yoon Joong started playing Starcraft because he wanted to beat his seatmate. Eventually he improved enough to become the best in his city, enabling him to win about $300 in a middle school tournament. This led to his father accepting his career path as progamer.
Shuttle has had a few scattered Proleague appearances on his team since the Shinhan Bank Proleague 2007. He is often overshadowed by his Protoss teammate Kal, who has had much more success than Yoonjoong and has appeared on his team’s lineup much more. Yoonjoong is perhaps most famous for his success in the TG-Intel Classic Season 1, where he defeated Violet and longtime Starleague veterans XellOs and fOrGG before losing to eventual tournament winner Jaedong in the semifinals. Since the TG-Intel Classic Season 1 though, he has yet to achieve much else. He has continued to have infrequent Proleague appearances, but has recently reached the Ro8 in the Averatec-Intel Classic Season 3 as well as make it to the Ro36 in the Bacchus Starleague 2009 before losing to Flash in the final set.
- Kim Yoon Joong has an extremely good PvP record despite a small set of games played over his career at 22-11 (66.7%, April 2010), which includes wins over JangBi, Violet, BeSt, and Stork.
- His ID Eyewater is a literal translation of the English word "tears".
- has several nicknames in the Korean scene. For example he is named: 
- "Elsa Toss" because of his usage of Stasis Field
- "Mole Toss" because of his prominent mole on his face
- "Star Dragon" because of the amount of donations (Star Ballons) he gets on AfreecaTV
- "The Monstrous Progeny of Capitalism" because he would always play much better when prize money was on the line
|In Premier Tournaments|
|2016-09-10||1st||Afreeca Starleague Season 1||3 : 0||Sharp||$13,500|
|2008-07-20||3 - 4th||GOMTV TG Sambo-Intel Classic Season 1||0 : 3||Jaedong||$10,000|
|In Major Tournaments|
|2016-12-30||2nd||SBB Starleague||1 : 3||Flash||$450|
|2016-11-10||3rd||Nal_rA Starleague||1 : 0||Bisu||$35|
|2014-03-09||3 - 4th||GOMTV WeMakePrice Classic Season 4||0 : 3||Sea|
|In Minor Tournaments|
|2015-12-13||3rd||Spotimes Starleague Season 2||4 : 0||Larva||$440|
|2015-04-16||3rd||41 Maki Starleague Season 1||FF||Sea||$14|
|2014-08-30||4th||41 Starleague Season 2||4 : 1||Sky|
|2014-02-25||4th||ZeuS Starleague Season 1||2 : 3||HiyA|
|2013-11-01||1st||18th SOSPA Ranking Tournament||3 : 1||Killer||$470|
|2013-10-16||4th||17th SOSPA Ranking Tournament||0 : 2||HiyA|
|2013-05-30||2nd||13th SOSPA Ranking Tournament||2 : 3||Movie|
|In Team Tournaments|
|2010-02-08||Shinhan Bank Winners League 09–10||All Kill of Samsung KHAN|
|Complete Results in any Tournament|
| VANT36.5 National Starleague
| Afreeca Starleague Season 1
25th June 2016-10th September 2016
| Afreeca Starleague Season 2|
- Flash vs. YoonJoong on Holy World, Bacchus Starleague 2009, Ro36 Group K 2stage 1set — coming back from a large disadvantage.
- Bisu vs. YoonJoong on Neo Medusa, Shinhan Bank Proleague 08–09, Ro4 Week 5 Day 2 1set — very intense PvP between Beesuit and Tinky-Winky. Extremely back and forth, and great defense by both players the whole game.
- Shinhan Bank Winners League 09–10, Week 3 Day 3 — vs. Samsung KHAN:
- ▣ vs. Great on Judgement Day, 1st set ; ▣ vs. Juni on New Tornado, 2nd set ; ▣ vs. Stork on Roadrunner, 3rd set ; ▣ vs. JangBi on Fighting Spirit, 4th set