Emo Jimmy Butler is back in a big way — the Miami Heat star is heavily featured in Fall Out Boy’s latest music video … playing the role of a dancing cowboy!!

Butler — who looked more like Jimmy Heat World during Miami’s media day thanks to his hilarious haircut — brought the look back in the visuals for “So Much (For) Stardust,” which show him grooving while rocking an all-purple, bedazzled look.

The first half of the video is all about Butler … before his character shakes a magic 8 ball and the band’s bassist, Pete Wentz, pops out in a beige costume that rivals the hooper’s ensemble.

Fans — who are cleverly dubbing Butler “Heat Wentz” — are loving the project … praising the two for movin’ and groovin’ together in the latter half of the song.

The cowboy part is natural for Jimmy — especially considering he’s been open about his love for blaring country music and his plans to drop his own album.

When he spoke with reporters at media day … he explained he wanted to be “one with my emotional state,” but he quickly switched back to his regular cut shortly after.

The emo cut might have been short-lived… but thanks to the music video, it now lives forever in music history.