Short answers, pulled from the story.
Sodom is an underground wrestling promoter and boss of the Subway stage who originally appeared in the 1989 beat-em-up game Final Fight. He wears a samurai kabuto helmet with a mask, tabi socks, geta sandals, blue jeans, and body armor while wielding either katana swords or jitte weapons.
Sodom made his first appearance in the Street Fighter series in the original Street Fighter Alpha: Warriors Dreams on 1995. Capcom included him because he was popular and easy to translate into the one-on-one fighting genre according to Tatsuya Minami senior manager of Capcom's Product Planning and Design section.
In the 1989 game Final Fight Sodom wields two katana swords against intruders but later trades them for a pair of jitte after being defeated by Guy. In Street Fighter Alpha 3 X-ism mode players can choose to have Sodom use his katana blades from Final Fight instead of the jitte.
Sodom is characterized as an American Japanophile who is greatly fascinated by Japanese culture but misunderstands it including writing the kanji shi meaning death incorrectly on his outfit. He travels to Japan to re-educate himself and develops a new fighting style based on Japanese and Western martial arts.
Sodom appears in Street Fighter TV series episodes titled The Medium Is The Message Cammy and the Bachelor and Final Fight where he competes in tournaments or works for M. Bison and Shadaloo alongside Birdie. He also makes a cameo appearance in the 1999 anime film Street Fighter Alpha: The Animation traveling with Ryu Ken Chun-Li and other fighters to Dr. Sadler's laboratory.