"Mr. Roboto" is a song written by Dennis DeYoung and performed by the band Styx on their 1983 concept album Kilroy Was Here. It reached #3 on the Billboard Hot 100, giving the band their first notable hit since "Too Much Time on My Hands" in 1981. Mr. Roboto is one of Styx's most popular songs and one of Generation Y's most known Styx songs--Come Sail Away being the other.
The song appears several times in the Japanese drama "Densha Otoko"