[2] Mac Sabbath is visually inspired by characters from McDonaldland, the fantasy world which fast food restaurant McDonald's once used in its marketing campaigns geared towards children.

Mac Sabbath's concerts are described as a "multimedia show with video, theatrics, audience participation and sing-alongs", featuring an array of food-related props which tie into their overall theme.

The Village Voice, describing the "surreal and chaotic" nature of their shows, wrote of "red-eyed, demonic-looking clown statues, inflatable cheeseburgers, and oversized prop ketchup and mustard bottles", noting "The blazing primary colors and infernal special effects make the whole thing feel like Hieronymus Bosch's My Little Pony".

[5] Odd was then invited to a Mac Sabbath show—who at that time were only performing secret shows in restaurant basements—and decided to start working with the band.

[11] Mike Odd, lead singer of the Los Angeles hard rock band Rosemary's Billygoat, publicly acts as the group's manager and speaks on their behalf in press releases.

[1] Mac Sabbath performed their first public concert on July 12, 2014, as part of an art show at Bergamot Station in Santa Monica.

The costumes are awesome, they stick to the theme like glue...and they legitimately sound tight",[21] while NJ.com wrote "[a]s a Black Sabbath cover band, they're not bad.

[35] In an interview with LA Weekly prior to the tour, Mike Odd commented tongue-in-cheekly that Mac Sabbath was likely the first band to play England before they ever left California.

[4] Upon returning from England, Mac Sabbath underwent multiple extensive tours of the United States, beginning with a West Coast tour in July which took the band back around California and into Oregon, Washington and Idaho, including a performance at the Outside Lands Music and Arts Festival in San Francisco, which featured Elton John and Mumford & Sons as headliners.

[40] The Houston Press, in one of their "highest reviews", applauded the band's visual presentation but poured most of their praise on the satire and the social commentary of the lyricism, considering it an "important statement on modern American culture", while the San Antonio Current wrote that the band "rock harder than the playground's ball pit...[they go] all the way and take the parody to all new layers".

[41][42] Although Mac Sabbath's theatrics and musicianship were unanimously acclaimed, Ronald Osbourne's vocals were frequently singled out as an area of criticism.

[45] These tours were once again met with critical praise, with many reviewers commenting on the surprising longevity of the band's gimmickry and the Orlando Weekly labeling them a "genuine cult phenomenon".

[49] When asked about Mac Sabbath's appeal, manager Mike Odd stated "When we walk into the club, it's an eyebrows-up sort of situation...It's 'Why this?'

Club premiered Mac Sabbath's first music video for "Pair-A-Buns", which intercut footage of the band with stop motion animation of Ronald Osbourne violently gunning down other fast food mascots including Colonel Sanders, the Burger King, Wendy, Jack Box and the Hardee's/Carl's Jr.

[55] The following October, Ronald Osbourne collaborated with another Los Angeles-based comedy band, the costumed, poultry-themed punk rock group the Radioactive Chicken Heads, where he was credited with providing backing vocals for the song "Cluck at the Moon" on their studio album Tales From The Coop.

[56] In December 2017, it was announced that Mac Sabbath and Star Wars-themed metal band Galactic Empire would jointly headline the "I Got a Bad Feeling About This Tour" in February and March 2018.