Based solely on available sources, Charlie Berger is listed as a minor character within the Sonic Soldier Borgman universe. Detailed character information across the documented media focuses exclusively on main characters such as Ryo Hibiki, Chuck Sweagar, Anice Farm, Memory Gene, Dust Gead, and Gilbert Mesh, detailing their backgrounds, roles, relationships, and story developments. No specific details regarding Charlie Berger's background, narrative involvement, character development, or appearances in the TV series, OVAs, or spin-offs are provided.