[7] The singer was honored to be able to work with Manson and was pleased with his vocal performance on the track; she told MTV News that "Bad Girl" is one of her favorite songs on the Avril Lavigne album.
"[15] Nick Catucci of Entertainment Weekly compared Manson's "croaking" vocals on the song to Cookie Monster's speaking voice.
[10] Conversely, Jon Caramanica of The New York Times felt that Kroeger's impact on the track, and most of the Avril Lavigne album, is "negligible.
[21] Idolator's Mike Wass said that while Lavigne's previous singles "Here's to Never Growing Up" (2013) and "Rock n Roll" (2013) covered "old ground," "Bad Girl" saw her leaving her musical comfort zone.
[17] Similarly, Jon Caramanica of The New York Times felt that Lavigne "revolt[s] in small ways" with "Bad Girl".
Jason Lipshut of Billboard named it "salacious, sloppy, muddied rock music - as it damn well should be," praising Lavigne and Manson for turning the song into "glorious chaos.
[16] Robert Copsey of Digital Spy praised the song's punk rock elements and for "offering an indication of where her sound could be [or] go in the future.
"[21] Mike Wass of Idolator said "It's great to hear that pop's original bad girl still nows [sic] how to push boundaries and rock the fuck out.
"[17] For The Guardian, Caroline Sullivan lauded the "particularly pungent" song for "raging against the dying of the light,"[24] while The Denver Post called it one of the album's "pop anthems.
"[12] Kyle Fowley of Slant Magazine felt that "Bad Girl" lacked the honesty of Lavigne's single "Complicated" (2002), calling it a "dull piece of nü-metal, featuring a phoned-in performance by a disinterested Marilyn Manson.
"[11] Chuck Eddy of Rolling Stone deemed it cartoonish and devoid of the playful spirit of "Hello Kitty" (2013), another song on Lavigne's self-titled album.
[13] AllMusic's Stephen Thomas Erlewine found "Bad Girl" disgusting, partially because it was co-written by Kroeger, Lavigne's then-husband.
[8] Along with many other songs from the parent album, "Bad Girl" debuted at number 58 on the Gaon Music Charts, with 4,511 copies sold in its first week.