Mumintrollet aka Moomintroll was a Swedish television series from Finland, released in 1969, based on the Moomin books by Tove Jansson. It was written by Tove and her brother Lars Jansson and was directed by Vivica Bandler.
The series featured live actors dressed in Moomin costumes. It is infamous for having the actors portraying the Moomin family take off their costume heads a bit into the series.
It remained faithful to the orginal stories despite being surreal in nature.
Thirteen 25-minute episodes were produced.