this pair of statues is "L'ange du mal" by Joseph Geef and "Le génie du mal" by Guillaume Geef. Here's a picture of the original statue created by Joseph:
Frankly, I think the real reason this one was removed was because it showed ass:
Anyways, the commission was passed to the older brother Guillaume Geefs, who delivered this delight:
Like shut UP this is so much hornier?!??! Sure, the wings are bigger and there's more cloth (and presumably no ass) but his hand draped lightly on his cresfallen head?? His pouty little eyebrows??? The crown in his hand? THE FUCKING CHAINS??!?!?!
How could you NOT develop a foot fetish after seeing this.
I want to give some credit to this frankly mediocre blog post because it did have the best collection of pictures I could quickly find. Also, here's the wikipedia page for the pair of statues.