I also remember Bertie the Bunyip and I too never realized its namesake's monstrous reputation until recently, when I came across a description while Googling for a picture of the puppet. Little more than the name rattled around in my noggin since the 50s, back there with Rootie Kazootie, Koko the Clown and Tinker the Toymaker, speaking of visions straight on Insane Clown Posse videos.