People of the Revolution and the USSR
- Wilhelm Liebknecht Wilhelm Liebknecht Co-founder of the Eisenach party and drafter of the Gotha Programme
- August Bebel August Bebel Co-founder of the SPD who led the German workers' movement for over 40 years, the 'shadow emperor' of the working class
- Carl Legien Carl Legien German trade-union leader who signed the 1918 agreement with Stinnes and met the Kapp Putsch of 1920 with a general strike
- Hugo Haase Hugo Haase Lawyer who founded the USPD against the war and co-chaired the Council of People’s Deputies with Ebert in 1918
- Gustav Bauer Gustav Bauer Social Democratic chancellor whose government accepted the Treaty of Versailles under an Allied ultimatum
- Friedrich Ebert Friedrich Ebert SPD leader who headed the revolutionary government of 1918, steered the councils into parliamentary democracy and became the first president
- Arthur Crispien Arthur Crispien German social-democratic politician and co-chair of the Independent Social Democratic Party.
- Hermann Müller Hermann Müller A Social Democratic politician of the Weimar Republic who served twice as chancellor.
- Paul Levi Paul Levi From Rosa Luxemburg's lawyer to KPD leader, his 'anti-putschism' took on Comintern adventurism
- Ernst Reuter Ernst Reuter The social democrat who became the voice of divided Berlin
- Friedrich Ebert Jr. Friedrich Ebert junior A social democrat who moved from municipal politics into state power amid Germany's division
- Kurt Schumacher Kurt Schumacher SPD leader who survived ten years in Nazi camps and, after the war, refused the merger with the Communists
- Erich Gniffke Erich Gniffke SPD organiser in the Soviet zone who signed the merger with the KPD, then left the SED in 1948 and fled west
- Erich Ollenhauer Erich Ollenhauer Exiled SPD functionary who succeeded Schumacher as SPD leader and leader of the West German opposition
- Willy None Brandt Willy Brandt A social democrat who made reconciliation a politics of divided cities