Under the Blade is the debut studio album by American heavy metal band Twisted Sister, released on Secret Records in September 1982.

[citation needed] The track "Bad Boys of Rock 'N Roll" is a new recording of a track that appeared earlier on the 1981 compilation "Homegrown Album" In a long article about '80s metal, Tim Holmes of Rolling Stone wrote a contemporary review about Twisted Sister describing them as "the clown heir apparent to the gaping vacancy left by Alice Cooper" and a band who "write(s) songs that have a giddy, street-smart narrative approach and a gritty coherence that metal usually lacks."

He writes that the musicians may have "bar band roots", but on the album "the fun side of Twisted Sister is set aside in favor of something a lot darker", which brought to "a hell of a debut that not only connected with British heavy metal fans, but would eventually lead to a contract with Atlantic Records, paving the way to stardom a couple years later.

"[5] Canadian journalist Martin Popoff considers Under the Blade "dead serious despite the garish imagery, a good four-fifths of it rocking with hellacious clout, attitude and clever economy" and remarks how the influence of Judas Priest is evident in Dee Snider's compositions.

[8] In 1985 the member of the PMRC committee Tipper Gore (wife of Senator Al Gore), found that the song "Under the Blade" referred to "sadomasochism, bondage, and rape", promoting violence, while Dee Snider testified at the Congress panel hearings that it was "about surgery, and the fear that it instills in people", concluding that "the only sadomasochism, bondage, and rape in this song is in the mind of Ms.