Born in Sant Pere de Vilamajor in 2003 and a defensive central midfielder who provides a lot of balance to the team, Marc Casadó left Damm to join the Club for the 2016 season. The Catalan midfielder has stood out throughout his time in youth development at Barça, becoming one of the leaders of the squad.

The centre midfielder has been wearing the FC Barcelona jersey since he was in the Under-14A team, shining bright as he moved through the age groups, culminating in Casadó captaining the Under-19A side to the Liga and Copa de Campeones double. 

In the 2022/23 season Casadó moved up to the Barça Atlètic squad and made 36 appearances for the team. The following season under Rafa Márquez he made another 30 appearances, alternating between midfield and right back. 

In 2022/23 he made his official debut for the first team in a Champions League game against Viktoria Pilsen and in the summer of 2024 Casadó became an official first team member.