Casillas and Özil were teammates at Real Madrid. They played together from the 2010-2011 season until Özil's departure in 2013. Casillas is regarded as one of the greatest goalkeepers in football history.
Thibaut Courtois is a Belgian goalkeeper known for his immense height, reflexes, and shot-stopping ability. He has played for both Chelsea in the Premier League and Real Madrid. Courtois made his name at Chelsea before moving to Real Madrid, where he has continued to establish himself as one of the top goalkeepers in the world.
Buffon joined Juventus in 2001 from Parma and became the club's iconic goalkeeper for over a decade. He won multiple Serie A titles with the team and was known for his incredible shot-stopping abilities, leadership on and off the pitch, and his loyalty to the club. Buffon left Juventus in 2018 but returned to the club for another stint later on.
Joe Hart is an English goalkeeper who had a successful career at Manchester City and represented the England national team. He was known for his shot-stopping ability, quick reflexes, and commanding presence in the penalty area. Hart played a crucial role in Manchester City's rise to prominence and won multiple domestic titles with the club.