Question mark
The rhetorical question mark or percontation point was invented by Henry Denham in the 1580s and was used at the end of a rhetorical question; however, its use died out in the 17th century. It was later revived in modern-day society by Matt DiRoberto. It was the reverse of an ordinary question mark, so that instead of the main opening pointing back into the sentence, it opened away from it. This character can be represented using the reversed question mark (⸮) found in Unicode as U+2E2E. The percontation point is analogous to the irony mark, but those are even more rarely seen.
? and the Mysterians
? and the Mysterians (also rendered Question Mark and the Mysterians) are an American garage rock band of Mexican origins from Bay City and Saginaw in Michigan who were initially active between 1962 and 1969. Much of the band's music consisted of electric organ-driven garage rock and an enigmatic image inspired by the science fiction film "The Mysterians". In addition, the band's sound was also marked by raw-resonating lead vocals of "?" (Question Mark, the stage name of Rudy Martínez), making Question Mark and the Mysterians one of the earliest groups whose musical style is described as punk rock. Through their music, the group was recognized as a template for similar musical acts to follow.