Robin Kool made his entry into professional esports in 2016. Early in his career, he had stints with several teams but struggled to make a significant impact, often delivering underwhelming performances. Nonetheless, this did not hinder him from signing with mousesports in the spring of 2017, where he truly found his footing.
During his time with mousesports, ropz achieved notable success, winning several key tournaments, including ESG Tour Mykonos 2017, V4 Future Sports Festival - Budapest 2018, CS
Asia Championships 2019, and ESL Pro League Season 10. His outstanding performance at ESL Pro League Season 10 earned him recognition as the tournament's most valuable player.
After five successful years with mousesports, Kool sought a new challenge and signed with FaZe at the beginning of 2022. In his new team, Robin maintained his high level of play and emerged as one of the key players. With FaZe, he claimed victories at prestigious events such as the Intel Extreme Masters XVI - Katowice, PGL Major Antwerp 2022, ESL Pro League Seasons 15 and 17, Intel Extreme Masters - Sydney, Thunderpick World Championship, and CS Asia Championships 2023. Additionally, he secured silver medals at the Roobet Cup 22 and the BLAST Premier World Final 2023.