Meanwhile, lolmonade had snuck up on The Ventriloquist.

Scarface was arguing with Arnold about how they should kill the Batman.
"Freeze!" shouted lolmonade.
"What the..?" exclaimed Scarface as the Ventriloquist turned around to face lolmonade. However, the explosion from the Mad Hatter and UncleBob fiasco caused lolmonade to pull the trigger and shoot Scarface. Panicked by the bomb and his own gunshot fire, lolmonade kept shooting and riddled the Scarface dummy full of bullets.

After calming down, lolmonade arrested the weeping Arnold Wesker and then freed Batman and Robin.
"Good work, detective," exclaimed Batman, "But I'm afraid we're not out of the clear yet. The Ventriloquist has created a massive bomb that could blow up the entire city of Gotham!"
"Holy Hiroshima, Batman!" yelled Robin.
"Quite right, Boy Wonder," replied Batman, "Get the rest of the staff to safety, detective. Robin and I will go and defuse the bomb."
lolmonade agreed and got the rest of the hostages to safety, thankful that he had survived. As for Batman, after a bit of an ordeal, he was finally able to defuse the bomb.
And thus Gotham City was safe once more! Give or take a few police officers.......