Cosmo is one of the members of Team Galactic and was selected as Captain in 2019. They have so far competed in every single year of the Marble League.
In Marble League 2017, Cosmo finished 15th in Long Jump and 7th in High Jump, contributing to the team with a few points. He also competed in Fidget Spinner Collision, Relay Run, Block Pushing, Steeplechase, and Archery with the team.
During Marble League 2018, he finished 9th in Speed Skating and 12th in the Sand Mogul Race. He also competed in Halfpipe, Bobsled, Team Pursuit, Curling, Biathlon and Ice Hockey with their teammates.
In 2019, Cosmo was awarded the captain role. Cosmo competed individually in the second event of Marble League 2019, the Funnel Race, and finished 6th after qualifying for the final. In the Sand Rally, he stayed near the front of the pack for the entirety of the race and, with a great burst of speed at the very end, managed to win theier first medal, a silver. He also competed in Balancing, Gravitrax Slalom, Relay Run, Block Pushing, Hubelino Maze, Rafting, and Collision with their teammates.
Long overdue, Cosmo won their first ever individual medal in Marble League 2019 Event 16, the Sand Rally, placing 2nd. Although he never held the lead in the race, he was always near the front of the pack, and put together a great burst of speed to overtake several marbles in the final stretch of the race. He also has two additional silvers that he won with their team from the 2018 Bobsled and the 2019 Block Pushing.
For Marble League 2019 Cosmo was awarded the captain role, despite at the time not having any individual medals to their name. This caused some controversy, as many fans believed that the more successful Starry should have been chosen. However, due to their silver medal in the 2019 final event, it seems that fans have restored their faith in Cosmo, and most of the controversy has since died down.
|Marble League 2016||Balancing||Team||10th||233 cm||0|
|Relay Race||Team||8th||24.34 sec.||2|
|Team Pursuit||Team||7th||26.89 sec.||1|
|Precision Slalom||Team||9th||10 pts||0|
|Quartet Diving||Team||7th||34.64 pts||1|
|Marble League 2017 Qualifiers||Relay Race||Team||6th||10.51 sec.||7|
|Block Pushing||Team||7th||61.3 cm||6|
|Marble League 2017||Long Jump||Individual||15th||67.1 cm||1|
|Fidget Spinner Collision||Team||8th||Quarterfinal Loss||8|
|Relay Run||Team||15th||12.78 sec.||1|
|Block Pushing||Team||4th||65.6 cm||12|
|High Jump||Individual||7th||37 cm||9|
|Marble League 2018 Qualifiers||Curling||Team||2nd||Runners Up||7|
|Marble League 2018||Halfpipe||Team||11th||27.26 sec.||5|
|Speed Skating||Individual||9th||31.42 sec.||7|
|Team Pursuit||Team||10th||30.60 sec.||6|
|Ice Hockey||Team||4th||3rd Place Match Loss||12|
|Sand Mogul Race||Individual||12th||6.50 sec.||4|
|Amazing Maze Marble Race 2018||Maze||Team||7th||Semifinal Loss||-|
|Marble League 2019 Qualifiers||Block Pushing||Team||6th||105.6 cm||13|
|Relay Race||Team||13th||10.64 sec.||6|
|Marble League 2019||Funnel Race||Individual||6th||1:44.90||10|
|Gravitrax Slalom||Team||10th||9.07 sec.||6|
|Relay Run||Team||5th||9.279 sec.||11|
|Block Pushing||Team||2nd||67.0 cm||20|
|Hubelino Maze||Team||15th||26 pts||1|
|Marble League 2020 Friendly Round||Block Pushing||Team||1st||60.8 cm||7|
|Marble League 2020||Balancing||Team||15th||191 cm||1|
|Long Jump||Individual||7th||81.35 cm||9|
|Block Pushing||Team||5th||79.10 cm||11|
|Sand Mogul Race||Individual||9th||8.264 sec.||7|
|Black Hole Funnel||Duo||5th||89.61 sec.||11|
|Relay Run||Team||5th||8.544 sec.||11|
|Team Aquathlon||Team||14th||19.52 sec.||2|
- Cosmo met their future teammates (Starry, Astron, and Pulsar) while working at the Galactic National Space Center in Galakonur. They went on to found Team Galactic together.
- Stynth (17th September 2019). RetRollSpective – Team Galactic (Updated). Marble Sports.