Sebastian Ceb Debs is a professional player on the Dota 2 scene and winner of two The International titles. Between 2016 and 2018, he was a coach at Team OG, where he later won the aegis twice at The International 2018 and 2019 while playing as an Offlaner.

Sebastian started his cybersport career in 2011 with Team Shakira, finishing in 4th place at Dreamhack Winter 2011. After that he moved to Western Wolves, but due to problems in the team he soon left for mTw under syndereN.

In mTw Sebastian won qualifications for The International 2012 and DreamHack Summer 2012. However, at The International the team failed to show a good result. After that Ceb left mTw , revived Team Shakira as Shiba Gaming and later created DD.Dota. Under the new Quantic tag, the team failed to qualify for The International 2013, losing to RattleSnake.

Ceb and Sockshka then founded Sigma.int, achieving success at ESWC and other tournaments. In 2015, Ceb joined Alliance, finishing second at join DOTA MLG Pro League Season 2 and fourth at ASUS ROG DreamLeague Season 3 before moving to OG. When Resolut1on left OG, Ceb became a player again.

Aside from two wins at The International, OG did not perform well at lesser tournaments in 2018-2019. In January 2020, Ceb left OG 's active roster to become an assistant, but returned in July, helping the team to a second place finish at OMEGA League: Europe Immortal Division.

In 2021, the team finished 7th-8th at TI 10, shortly after Ceb announced his official retirement from the team on November 18, 2021. Despite this, Ceb played for OG as a reserve player in place of Misha in the 5th position during Stockholm Major 2022 in May 2022, as Misha was unable to participate in the major and possible PGL Arlington Major 2022, Ceb again became a reserve player. After the conclusion of The International 2022, Ceb formed a new team called Old G to compete in DPC 2023. He played for OG as a reserve player in DreamLeague Season 20 and Riyadh Masters 2023. Ceb returned to the active OG roster on July 30, 2023.

Upon returning to the OG roster Ceb participated in qualifying for The International 2023, but the team placed 5th-6th there and did not qualify for the main tournament of the year. After OG finished 4th place at DreamLeague Season 21 and 4th place at ESL One Kuala Lumpur 2023.

In January 2024, Ceb joined OG in qualifying for BetBoom Dacha Dubai 20 24 , DreamLeague Season 22 and ESL One Birmingham 2024. The squad managed to qualify for DreamLeague and BB Dacha Dubai 2024, but at the LAN qualifiers in Birmingham the team took 2nd place and did not make it to the event. At the main part of the tournament in Dubai, OG took 9-12th place, failing to get out of the group stage.

January 3, 2025, Ceb returned to OG. The team started 2025 with a 3rd place finish at Asian Dragon Series: Continental Collision. In March, the roster failed, finishing in last place at PGL Wallachia: Season 3. Soon after, Debs left the team.