A few years ago, I was looking for Auora monster kits when I came across these solid plastic glow-in-the-dark figures on eBay at a fraction of the price. The largest is about 6" tall and the poses are similar to the Aurora ones. There is no maker's mark underneath, but I understand they are re-issues of figures first made by Marx in the 1960s, possibly made by Uncle Milton Industries in the USA in the 90s. In the picture, they are shown glowing nicely under a UV light, although the originals were made of plain coloured plastic. The figures are: The Creature, Frankenstein's Monster, The Hunchback, The Mummy, The Phantom and The Wolfman. Oddly, no Dracula figure was made. Poor Quasimodo didn't really deserve to be classed as a monster. Also, I note that on the Polar Lights reproduction of the Aurora kit, he's referred to more kindly as 'The Bellringer'.
Here's a piece of trivia: The Quaker Oats Company, makers of Sugar Puffs until recently, bought the Marx toys company in 1972.