Rossa Matilda Richter (7 April 1860 – 8 December 1937), who used the stage name Zazel, was an English aerialist and actress who became known as the first human cannonball at the age of 17. She began performing at a very young age, practicing aerial stunts like tightrope walking in an old London church. She took up ballet, gymnastics, and trapeze by the time she was 6 and, at 12, went on tour with a travelling acrobat troupe. In 1877, she was the first person to be fired out of a cannon, in front of a large crowd at the Royal Aquarium.
Journalists and the public voiced concerns for her safety from the time of her earliest appearances as Zazel. She was named by a lawmaker as one of the reasons for proposed legislation in England to prevent dangerous acrobatic stunts, leading her to take the show to the United States. She toured Europe and North America with circuses including Barnum & Bailey, executing tightrope, trapeze, and high dive routines in addition to the human cannonball. Throughout her career, she suffered several accidents and injuries, the most serious of which largely ended her career in 1891.
During time off from the circus, she started an opera company with her husband and took singing roles in some of its productions. She also volunteered time writing and holding exhibitions to promote the life-saving potential for safety nets.