(Adventure Comics 057, 1940)
As I’ve said before, sometimes a character is very clearly a super-villain but chooses no name for themself, in which case for administrative purposes I pick something that the text boxes or other characters refer to them as and go with that. Scientists are usually easy – they just go by their name. This fellow, on the other hand, is basically only ever referred to as “Uncle,” so Uncle I call him.
And Uncle is a credible threat! He tries to ransom the world by threatening to destroy it by knocking it off of its orbit, then actually tries to do it in a fit of pique – it’s only the timely intervention of Sandman that saves the day.
In the last entry, when I was talking about mad scientists as perfect characters to bring back as reformed? This is the kind of guy I had in mind. What a gift to a cast!