What is the Deconstructor and what character has it?
If you beat level 3 of the game, you should see what it does & who uses it.
Just in case spoilers
The deconstructor is a device for ripping apart black shiny LEGO objects.
Since most of Batman's stuff is black & shiny it works really good on that.
Lex Luthor is the one using it, and since it runs on Kryptonite you can guess why he needs to get into Batman's lair.
Toho's Godzilla Will Live Forever
since it runs on Kryptonite you can guess why he needs to get into Batman's lair.
Yeah, as a comic geek, that bit didn't make a whole lot of sense to me, actually. Not the part where Bats has the vault, it's well-known that he's got something handy in case any League member goes dark-side, but come on, this is Lex frelling Luthor we're talking about here. I can't see any way that Superman's worst enemy, the guy who's spent enough time around the green stuff that it gave him Space Cancer, doesn't have at LEAST as big a collection as Batman at this point.
Member of the Super Ethical Genki Hunters [Saints Row the Third]