Thiay JT- Jun Wen is a professional player from Malaysia who plays at the third position.

Tia started his career in 2017 with Genesis Pro Gaming. The player's first professional team was Geek Fam, but after failing to qualify for The International 2018 he moved to Mineski. In the new team, the player took the first position and took on the role of captain and led the team to victory at AMD Dota 2 Pro Series 2018 and DreamHack Mumbai Invitational 2018.

In 2018, Mineski sent JT- on loan to Invictus Gaming, where the player took root and became a member of the main roster. Under the banners of the new team, Tia showed good results: 4th place at The International 2021, 3rd at Huya Winter Invitational and 2nd place at DPC CN 2021/2022 Tour 3: Division II. Soon, after failing at the qualifiers for The International 2022, the player left the team and joined Xtreme Gaming.

The new season was quite average: Xtreme Gaming played at ESL One Berlin Major 2023 and Riyadh Masters 2023, finishing 10th and 15th respectively. JT- also tried to qualify for The International 2023, but lost to Azure Ray in the grand finals of qualification.

After another failure at the most important tournament of the year, the guy returned to Invictus Gaming, which soon changed its tag to G2.IG due to a partnership with G2 Esports. Roster played at ESL One Kuala Lumpur 2023, Games of the Future, DreamLeague Season 22, Elite League 2024, ESL One Birmingham 2024 and PGL Wallachia: Season #1, though he didn't manage to take the top spots at all of them, and also qualified for Riyadh Masters 2024 and The International. At the Riyadh Masters he finished in 19th place.

In August, G2.IG participated in the Clavision Snow Ruyi Invitational, where they reached the quarterfinals and finished in 6th place. At the same time, JT- finished 7th at the FISSURE Universe Ep 3. At The International 2024, the team did not perform well, finishing the tournament in 13th place after being eliminated in the first round of the lower bracket playoffs. After TI JT- joined the Gaozu stack and participated in ESL One Bangkok 2024, but only placed 9-12.

In 2025, JT- represented Titan, MOODENG WARRIORS, and Yakult`s Brothers for some time, but did not achieve any significant success with these rosters.

At the end of May 2025, the organization revealed its roster for The International 2025 qualifiers, featuring well-known Chinese pro players led by Lu Somnus Yao and Jian Wei xNova Yap. Unfortunately, the team had a poor performance, losing in the lower bracket. After failing to qualify, the organization announced the disbandment of the roster.

In early January 2026, he teamed up with other Chinese players to form a new roster called Game Master in order to compete in qualifiers for major tournaments. In March, JT returned to the Yakult Brothers.