Wacky US-hating dictator Kim Jong Un once played an all-American hero — in a school production of Grease.

The North Korean tyrant appeared as a slick-haired leather-jacketed member of “good” gang the T-Birds as a skinny teen, The Sun can reveal.

Our snaps also show the now chubby nuclear despot, 30, in swimming trunks and larking about with fellow pupils at his posh private school.

He started at the $25,000-a-year International School of Berne in Switzerland aged 11 in 1994 and stayed until 1997.

Kim also loved comics and watching US films such as Jurassic Park.

Read more at The Sun.