Berenett made his theatrical debut in 1967 and continued to act in leading roles such as Jean in Miss Julie and Edgar in Dödsdansen.

Berenett made his professional acting debut in Vilgot Sjöman's Klänningen in 1964 where he played the messenger of Maison Georges.

Berenett also often played villain roles, for example as the bank robber Erik Stigertz in the TV miniseries Polisen som vägrade svara (1982), a gangster called Charlie in the series Spanarna (1983) and the bomb man Rikard Kostner in the thriller series Den svarta cirkeln (1990).

In contrast to the villain roles, he portrayed some likeable characters, such as the land-surveyor in Lars Molin's TV series Tre kärlekar (1989–1991).

A short time after his divorce with Strandberg, Berenett started a relationship with the actress Maria Kulle, with whom he had a second son.