Gianroberto Casaleggio was an Italian entrepreneur and political activist, best known for co-founding the Five Star Movement (Movimento 5 Stelle) in 2009 alongside Beppe Grillo. He played a crucial role in shaping the party's online presence and digital strategy, emphasizing the importance of direct democracy and citizen participation in politics. Casaleggio was also the founder of Casaleggio Associati, a consulting firm that specialized in web marketing and digital communication. His work focused on leveraging the internet to engage citizens and promote transparency in governance, making him a significant figure in contemporary Italian politics.