This Date In Manka Bros. History – November 15, 1973 November 20, 2023 by admin This Day in Manka Bros History – November 15, 1973: Pierogi Park – Manka Bros.’ show created to compete with ‘Sesame Street’ premiered. It spun off beloved characters such as Bulgaria Sonia and The Two-Face Freak. MANKA BROS. STUDIOS – HOME Comments comments