Norman Frederick Hetherington OAM (29 May 1921 – 6 December 2010) was an Australian artist, teacher, cartoonist (known as "Heth"), puppeteer, and puppet designer.He is best remembered as the creator of one of Australia's longest running children's shows Mr. Squiggle. Hetherington was the sole operator and voice of its star performer, the Mr. Squiggle marionette.