A circus performer is someone who entertains an audience with a variety of acts. Fleas are small performers who often perform acrobatic stunts such as tumbling and juggling. Acrobats are skilled performers who perform feats of balance, agility, and strength. Clowns are comic performers who use physical comedy, slapstick, and other forms of humor to entertain audiences. Stilt walkers are performers who use tall stilts to walk around and perform various tricks. All of these performers are essential to the success of a circus show.