Short answers, pulled from the story.
Crunkcore is a microgenre that combines post-hardcore screamo and emo with Southern hip-hop crunk, electronic dance music, heavy metal strains like nu metal and metalcore, and pop. It is also known as crunk punk, screamo crunk, and scrunk. The genre is characterized by screamed vocals, hip-hop beats, and sexually explicit party-themed lyrics.
Hollywood Undead, Brokencyde, and 3OH!3 are credited as the primary artists behind crunkcore's creation. Hollywood Undead provided the genre's earliest roots, Brokencyde is considered most responsible for its rise, and Warped Tour CEO Kevin Lyman called 3OH!3 the real tipping point for the genre.
3OH!3's 2008 single "Don't Trust Me" is described as the genre's greatest commercial success.
Yes. Kerrang! writer Aliya Chaudhury credits crunkcore, alongside metalcore and nu metal, as one of three scenes that especially contributed to hyperpop's emergence. She specifically credits 3OH!3's parody of pop, blown-out synths, and modulated vocals as creating the main blueprint for hyperpop.
Brokencyde attracted more critical backlash than almost any other act of their era. AbsolutePunk founder Jason Tate stated the level of hostility against them exceeded anything he had seen for a single act in ten years. Critics including John McDonnell of The Guardian and writer Jessica Hopper reviewed their music unfavorably, while some academics framed crunkcore broadly as an appropriation of African-American culture by white artists.
Crunkcore developed in the mid-2000s from the scene subculture. The genre declined in the 2010s, though Brokencyde continued recording and 3OH!3 continued touring for several years after its peak.