Fellon is a young 16-year-old French rider who in 2019 finished 5th in the RedBull Rookies Cup. In 2020 he competed in the CEV Moto3 ™ Junior World Championship with Estrella Galicia Junior, where he finished 11th with a 4th place in Aragon as the best result. 2021 saw him make the jump up to the World Championship circuit with SIC58 Squadra Corse in Moto3™. After completing all but three races, the Frenchman had an encouraging 2022 which saw him take several top 15 finishes. CIP Green Power clearly saw enough potential in Fellon, and they handed him a seat on their team for 2023. Unfortunately, in 2023, the young French rider struggled with a shoulder injury for a significant part of the season and was unable to make a mark. The only time he managed to finish in the points was in Australia, where he secured a 10th-place finish. 2024 brings new hope that he can continue his development in the category.