All Japan Women's Pro-Wrestling (1980–1986) Matsumoto made her debut for AJW in December 1980. She was an unremarkable rookie for the promotion until late 1982 when she joined
Devil Masami's Devil Corps faction and became a villain. As part of the Devil Corps Matsumoto defeated
Lioness Asuka for the
AJW Championship on January 8 1983 and held the title for almost six months before losing the title back to Asuka on June 1, 1983. It was in January 1984 that she took the name
Dump Matsumoto, supposedly because she was stocky but powerful like a
Dump Truck. On the same day, she adopted the name Dump, Matsumoto dyed her hair blonde (In the context of Japan at the time, this was a major break from social norms) and donned face paint and a black leather jacket inspired by the rock band
KISS. Matsumoto has claimed that, upon adopting the Dump persona, she wrote the equivalent of a suicide note to her mother explaining that Kaoru was now "dead". During her feud with the
Crush Gals, she would often team with
Bull Nakano and Crane Yu, known collectively as the "Atrocious Alliance". On February 25, 1985, Matsumoto teamed with Crane Yu to defeat the Crush Gals for the
WWWA World Tag Team Championship, although the two were forced to vacate the title two months later following Yu's retirement. The Crush Gals vs Atrocious Alliance feud was ultra-successful for AJW and saw all involved throw in stardom. Matches between the Crush Gals and the Atrocious Alliance would regularly attract a 12.0 rating on
Fuji TV, the station AJW broadcast on in Japan. This meant that 12% of the entire viewing audience in Japan that night were viewing the match. Throughout 1985 and 1986, Matsumoto and
Chigusa Nagayo had a feud with each other that included two highly acclaimed
hair vs. hair matches. She later lost to rival Chigusa Nagayo for the
All Pacific Championship in Tokyo, Japan on April 5, 1986.
World Wrestling Federation (1986) In early 1986, she and Nakano made a brief appearance in the
World Wrestling Federation as The Devils of Japan, wrestling
Velvet McIntyre in two separate tag team matches with
Dawn Marie in
Boston,
Massachusetts on March 8, which they lost and with Linda Gonzales in
New York City,
New York on March 16, 1986, which they were victorious.
Return to AJW (1986–1988) Once back in Japan, Matsumoto resumed her feud with the Crush Gals teaming with Bull Nakano to defeat Lioness Asuka and
Kazue Nagahori (substituting for an injured Chigusa Nagayo) for the WWWA Tag Team title on August 23, 1986, however, the two would eventually be forced to vacate the title the following year. Although Matsumoto officially announced her retirement on February 25, 1988, in which she wrestled the Crush Gals in a tag team match with Yukari Ohmori and then siding against her partner by switching with Nagayo against Asuka and Ohmori, she wrestled her final match against Bull Nakano and Condor Saito on February 28 and thereafter retired.
Occasional appearances (1998–present) She has since appeared on several All Japan Women "legends reunions", and in August 1998, Matsumoto and Crane Yu came out of retirement wrestling in a ten-minute exhibition tag team match against
Combat Toyoda and Hyper Cat. She also made several appearances for the now defunct
GAEA promotion, and as recently as November 11, 2007, ran her own show under the banner of Gokuaku Domei Produce at Shinjuku FACE. ==Wrestling style and persona==