The Circus was a comic strip printed in Editorial Tynset S.A.'s 'El Planeta De Los Simios' 1977 Argentinian comics, written by Jorge Claudio Morhain and illustrated by Sergio Alejandro Mulko, and featuring the characters from the Planet of the Apes TV series.
As the fugitives rest, Burke walks to a creek to refill their water and is caught in an ape's net. When he fails to return, Virdon and Galen take a different footpath to investigate and see other humans being netted. They follow the apes' jail wagon to what was once the Metropolitan Opera House, the only building still standing in this area - now called the 'Palace'. With Virdon outside as backup, Galen sneaks inside. Urko arrives at the same time to inspect Prefect Kobal's local police. In the human pen, an ape with a whip beats and humiliates Burke and others. The ape arms Burke and another human with sticks, ordering them to fight. Galen asks a guard the way to the slave pen, posing as a foreigner. All humans, the guard says, are used in the Circus. Kobal gives Urko a tour of the city, saying humans in the Circus are taught to fight each other for food. Galen watches as Burke injures a young man with kendo moves. Ordered not to help the boy, and seeing Urko in the stands, he beats the boy badly so he can leave the arena before being spotted. Unaware of Urko's presence, Alan sneaks in to find them. As the 'Great Tournament' begins, pairs of humans begin fighting at the sound of a gong. The winners are promised freedom, but instead are executed so Kobal can mate the weaker humans and reduce the chance of rebellion. Burke is called to fight in the next round, but he knocks out his guard and runs with Galen for an exit, inadvertently entering the Circus arena. Urko recognizes Burke and stands to capture him, but loud bells pierce the air, vibrating the masonry to pieces. Everyone runs for cover as the building collapses. Virdon tells his friends he found bells in the Met's sound room. Sadly surveying the fallen opera house, the fugitives continue their flight.