Stoyan muxa Kostov is a professional player from Bulgaria who plays at the first position.

He started his career in 2018. The first professional squad for the player was madjor atendari, with which he unsuccessfully tried to qualify for The Kuala Lumpur Major. In the summer of 2020, he became a member of Cyberium.S and won at Glory of the Summer, and afterwards was promoted to Cyberium's main roster. However, the player failed to reach his potential and was transferred to inactive. In February 2021, Stoyan joined Spider Pigzs, with which he participated in DreamLeague Season 14 and took fifth place, and soon the team was disbanded. 

Later, together with Into the Breach, he tried his hand in the qualifiers for The International 2021. And in 2022 with CHILLAX he made it to the second tour of DPC WEU 2021/2022 Tour 2: Division II, where he took fourth place. And under the banners of DGG Esports tried his luck in qualifying for The International 2022. Also took part in the Riyadh Masters 2022 with Deboosters and finished tenth.

In 2024 he tried to qualify for such tournaments as BetBoom Dacha Dubai 2024, PGL Wallachia #1, DreamLeague Season 22 and ESL One Birmingham, but failed to qualify for the main part of any tournament.

• December 26, 2024 - muxa left Dragon Esports.