[2] In December 1990, Punkreas released the demo Isterico, their self-made debut record, containing the single "Il vicino", that quickly became a success and the flagship song of Italian ska core.

Many live shows followed Isterico and in 1992 United Rumors of Punkreas was published, the excellent forebear of Paranoia e Potere, maybe the band's best record.

The exhibitions at the Festival Teste Vuote Ossa Rotte – which later would become Independent Day – and Vans Warped Tour confirmed the newly acquired success (as well as the status) gained by the band.

Three videos were also produced for the album, Sosta, Terzo mondo and Voglio Armarmi: the first is about a singular and unlucky theft in a store, the second with cultivated references, like Dr. Strangelove, the third entirely made of the cartoons by Davide Toffolo.

In 2005 Quello che sei was published under the Atomo Dischi brand, with songs like "American Dream," "L'uomo con le branchie" and "Chirurgo Plastico."