Source: laatinoreview.com

5. Cobalt Blue

Hey, remember Barry Allen? Of course you do. Remember his twin brother? No? Well, let’s talk about him.

In a plot twist ripped straight from a soap opera, it turns out that Nora Allen gave birth to twins, but one was swapped out for another woman’s stillborn infant. That woman: Charlene Thawne. Thawne? But—yes, yes, you are getting ahead of me here. Hang on a minute.

The baby, raised as Malcolm Thawne, grew up wondering why he didn’t have the same blue fire powers as his parents. When he discovered the truth, Malcolm tracked down his twin brother, and even got a job as a janitor for the CCPD to get closer to him. After his grandmother taught him the secret of the blue fire, Malcolm decided to destroy his twin (who, he had discovered, was secretly The Flash) under the name Cobalt Blue. He lost. After Barry died, Blue resurfaced, only to get his butt thoroughly handed to him by Wally West, Barry’s successor.

Oh, also, the Thawne family line would eventually lead to Eobard Thawne, The Reverse Flash. That, too.