Pinoy Big Brother: All In is the fifth main season of the Philippine ABS-CBN reality television series Pinoy Big Brother and the eleventh season overall. This was also the first season of the Big Brother franchise from the world to feature adult civilians, teenagers and celebrities taking part in the same season. Due to the mixed contestant types this season is referred to as a "Special Edition". Toni Gonzaga, Bianca Gonzalez, Robi Domingo, and John Prats reprised their roles as hosts, while Alex Gonzaga joins the show initially as a host but served as one of the longest-reigning houseguests.