At least this Batman villian isn't Exile.
The fairies kept bringing Igor uncut Diamonds.
Unfortunately he's using them in the bottom of his fishtank he cant tell one rock from another.
I wonder how many holes he's had to fill in? Diamonds have a tendency to scratch glass, one good thump and half of Cafe Gruesome will be flooded with seafood! :D
Not when their uncut Diamonds. Uncut diamonds tend to look like uneven rounded pebbles.
Oh and the diamonds are in his own fishtank.