By the time the heroes have arrived, there are far more monkeys than there were at first. The monkeys are somewhat spread out, and they seem to be eating animals and then... duplicating, each resulting monkey slightly different from its "parent," having mutated upon reproduction. The monkeys are divided in two groups: one attacking and distracting the heroes, and another obtaining biological matter for further duplication.

This is, of course, terrible.

The more mobile heroes - Glimmer, Dauntless, Velocity, and a bunch of bots and bot-controlled Glam- and Lorica-copies - surround the zoo to make sure none of the monkeys escape. Drupe, Armsmaster, Miss Militia, bots, and Glam-controlled Glam-copies spread around the zoo to try to take down as many monkeys as they can.

And it turns out fire does work.