1x03 - Wonder

Summary
Being caught in the crossfire of Zan and Jayna's save at Emil's labs, Lucia Silverstone becomes victim of her own experiment, inhabiting the villainous persona of Blackrock! Uncovering their presence back in Gotham City, Chloe is forced to clean up their mess, now more than ever when Lucia approaches Perry with an epose on Emil's experiments. Meanwhile, Oliver makes it his personal agenda to watch over Bruce as his depression begins to grow.

Title

 * The title refers to the Wondertwins, a sibling superhero duo who resurface in Gotham after an unsuccessful stint in Metropolis two years prior. They originate from the comics.
 * The title could also refer to the admiration, amazement and awe the Wondertwins hold for both Chloe, and her work with Watchtower.
 * Working titles for the episode included: "Wondertwins" and "Blackrock."

Continuity

 * Chloe suggests in order to find the Wondertwins, she and Oliver need to call them out. To do so, they stage a fake encounter with a criminal - Chloe playing the role of "damsel in distress" and Oliver portraying the role of "desperate thug". This is similar to when Chloe and Clark needed to find The Angel of Vengeance, and took on similar roles. ("Vengeance", Smallville)