Worlds Finest

Overview

Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.

Guest Stars

Jenna Dewan

Lucy Lane

Chris Vance

Non

Brit Morgan

Leslie Willis / Livewire

Harriet Sansom Harris

Sinead

Grant Gustin

Barry Allen / The Flash

Christopher Showerman

Tor

Italia Ricci

Siobhan Smythe / Silver Banshee

Jay Jackson

News Anchor