Handsome mariachi
From A KoL Wiki

This is a mysterious mariachi with a mysterious past. He has no name and no hometown, but damned if he hasn't got a good head of hair and a handsome face. He doesn't look too dangerous, but he's probably got a crossbow hidden in his guitar case.
He pulls a hidden switch on his guitar and it spews gouts of flame in your direction. Mmm, flame-broiled eye. Eek! Ugh!
He tries to charm you while he draws his gun, but you're not having any of that.
He pulls a hidden switch on his guitar and it spews a gout of flame. Fortunately, a change in the wind leaves him holding a big hunk of charcoal.
You acquire an item: bottle of tequila
You acquire an item: chorizo taco
You acquire an item: handsomeness potion
Found South of the Border.
References
- The handsome mariachi might be a reference to "El Mariachi", a character from the Robert Rodriguez films El Mariachi and Desperado