However, he became known for his work as a vlogger on the "maspoxavida" channel, created in February 2010[4] on the YouTube website, publishing critical videos, covering current and varied topics.

The program's look represented a computer monitor and, in addition to news given by Siqueira, there were reports, interviews,[6][7] special articles, with a more documentary character and a different aesthetic concern.

[18] He often poked fun at religion and caused controversy, most notably in 2011 when he said he used a Christian cross as a meatbeater and that writing "Cockroach, in my opinion, is proof that God does not exist!"

[24][25][26] Cauê Moura and Rafinha Bastos decided to announce the end of the Ilha de Barbados channel, of which Siqueira was part.

[29] On 24 February 2021, the Police of the State of São Paulo, after technical investigations by the Superintendency of the Technical-Scientific Police (SPTC), of the Secretariat of Public Security of the State of São Paulo, on the computer, external HD, cell phone, console electronic games and other electronic devices, found no evidence that PC Siqueira had stored, shared, researched child pornography content materials or had contact with minors.

[30][31] On 27 December 2023, PC Siqueira was found dead in his apartment in the Santo Amaro neighborhood in the city of São Paulo.

[33][34] With the repercussion of his videos on the internet, PC was nominated for Video Music Brasil 2010 in the Web Star category, he was the winner of the "Geek of the Year" and "WebCeleb" categories of the "Os Melhores da Websfera" award,[46] he was interviewed by Jô Soares and became the poster child for advertising campaigns for electronics and IT lines.