Heavens to Murgatroid!!!

Exactly what and where is murgatroid? I actually thought this was an old saying but it is from a cartoon character called Snagglepuss.

"The character of Snagglepuss originally appeared in 1959 as a minor character on episodes of Quick Draw McGraw, Augie Doggie, and Snooper & Blabber (this episode introduced Snagglepuss's nemesis the master hunter Major Minor). The character proved to have such appeal that he was given his own segment on The Yogi Bear Show when it premiered in 1961. Snagglepuss's favorite sayings were 'Exit stage left' and 'Heavens to Murgatroid.'

"heavens to Murgatroyd" means the same thing as "heavens to Betsy"-that is, very little. It's just an exclamation of surprise like "Goodness gracious!"