Steam Powered Giraffe (SPG) is an American steampunk musical comedy project formed in San Diego in 2008, self-described as "a musical act that combines robot pantomime, puppetry, ballet, comedy, projections, and music". Created and led by identical twins David Michael Bennett and Isabella "Bunny" Bennett, the act combines music and improvisational comedy on-stage, although their studio works focus almost solely on music. Steam Powered Giraffe has its own fictional mythology