4. Patty Spivot
Love triangle on Arrow aside, I dont see Felicity Smoak leaving the side of the Emerald Archer to hang out with Barry. Because of this, the show will need another female character for Barry to interact with. Enter Patty Spivot. One of Barrys coworkers at the Central City Police Department forensics lab, Patty has been a member of the Flashs cast of characters since the late 70s, although shes risen to popularity in the past couple years. Since the New 52 erased Barrys marriage with Iris West, Patty has become Barrys new love interest and recently learned his secret identity during the Gorilla City arc. I imagine the show taking a similar approach with Barry and Patty the same way they are inevitably heading with Oliver and Felicity on Arrow (or as the shippers on the Internet call it, Olicity). Barry is likely going to end up with Iris before the show is over, but hell probably build a relationship with Patty at some point before he realizes how much he truly loves Iris. However, I dont want Patty simply reduced to a love interest. Shes a smart woman, and I hope they utilize her an ally to Barry at some point. At some point shell learn he is the Flash, and she can start to help him, whether its covering for him at work or assisting him in analyzing evidence he cant figure out by himself. Much like Felicity acts as Olivers tech guru, Patty can be Barrys second set of eyes at the forensics lab.