Robot clown

The Robot Clowns were Androids modelled on Clowns.

Robot Clowns assisted the Chief Clown in running the Psychic Circus. They were responsible for making people perform and entertain the Gods of Ragnarok. These clowns were not destoyed by them but were used so that they would be entertained during the time when the Humans and other species went to take part iun the Talent Show. They were destroyed when the Doctor blew up the circus. (DW: The Greatest Show in the Galaxy)

Elijah also made a Circus full of Robot Maniquins in the shape of Clowns he used them to attack Sarah Jane Smith and her friends. Clyde Langer, Luke Smith and Rani Chandra. She used her sonic lipstick to disable them from attacking the group. (SJA: The Day of the Clown)

On Earth mear the mid-21st century, advances in Robot technology thanks to Alistair Gryffen and his Thought Matrix meant that Robot Clowns started appearing in circuses. Chuckles and Boris were two of these robot clowns. (K9TV: Robot Gladiators)