The Flash just had its season 2 finale this week and if you haven't seen it, you've been warned, because there will be spoilers ahead. Barry has spent the entire season battling Zoom, who was really Hunter Zolomon. Though Barry ultimately succeeding in defeating him, he still suffered one incredibly tragic loss. He lost his mother when he was a young boy and now as an adult, in the same childhood home, he watched his father die in front of him. So now, both of his parents have been killed by speedsters.
Barry tells Iris that he feels more hopeless and broken than he ever has and he almost doesn't know what to do with himself. So, he decides to try and fix all of this by going back in time and saving his mother from dying, regardless of what consequences may come. Just so you know, Barry has been told more than once the consequences of altering events when time travelling. The second season ends with Barry's mom still alive, and what comes next...will have to wait until season 3.
But there are any number of things that can happen next season, and there are plenty of things fans are dying to see. It looks like this upcoming third season could possibly be adapting Flashpoint - a story in which Barry's mom Nora is still alive, yet many of the DC heroes are villains or at war with each other. This possibility provides a whole new context for what fans can expect come this fall.
10 Booster Gold
In the Flashpoint series written by Geoff Johns, the story crosses over with the Booster Gold series. Seeing the character pop up on The Flash would definitely be a good surprise, considering he is a time travelling superhero - it also makes sense for him to appear on Legends of Tomorrow. His costume is pretty bright and flashy so that would be fun to see done in live-action, not to mention seeing Barry time travelling with another person. Booster Gold is apparently going to be getting his own movie, but maybe introducing him on the small screen first will help build up anticipation for his cinematic debut.
9 More Jay Garrick
We thought Teddy Sears would be playing the real Jay Garrick during this second season, but it turns out that he was really Hunter Zolomon. John Wesley Shipp - who actually played Barry Allen/Flash on the CBS series in the early '90s - ended up being the real Jay Garrick and looked perfect in his costume. The unfortunate thing is that this happened during the last 10 minutes of the final episode of season 2. We didn't even get to see the fake Jay Garrick be a speedster for most of this season. So the writers have to find a way to bring Shipp back and make him an integral part of season 3, with his powers fully intact.
8 Jesse Quick as a Speedster
While we're at it, we might as well see the whole Flash family on TV. This version of the character is played by Violett Beane and doesn't stumble upon her powers quite the same way as she did in the comics. Both she and Wally were impacted by the particle accelerator blast that sent Barry into the Speed Force. It would have been a safe bet to assume that she would get and exhibit her powers before Wally, but all of that is thrown up in the air after the season 2 finale. Without knowing the plot of the third season, it's difficult to guess how Jesse Quick could factor into the story, but it would still be great to see her become a speedster.
7 Wally West as a Speedster
Wally's character had to be one of the most anticipated components of the second season. In the history of Flash comics, Wally West is an incredibly important character and is also a vital component of the whole DC universe. Wally was able to do things as the Flash that Barry was never able to. Along with Jesse, it would be awesome to see Wally as a speedster in the third season. Although, one curious question would be what his name would be. Wally, at least in this show, is about 20 years old, so he's a bit too old to be called Kid Flash. They might be able to get away with calling him Impulse, but that name belongs to another character on this list.
6 Bart Allen
Bart Allen, a.k.a. Impulse, is the grandson of Barry Allen, born in the 30th century to Meloni Thawne and Don Allen. This makes him part of the Eobard Thawne family tree, but his family tree in the comics is much more complex than just that. But, whoever else he may be related to in the show, Bart could possibly travel back in time and catch up with his grandfather, Barry. The show has already introduced Wally, Jesse, and Jay - it's not at all far-fetched to think they would introduce Bart. Depending on what they decide to call Wally, the name Kid Flash would actually be a perfect fit for Bart.
5 Mirror Master
We've seen plenty of villains from The Flash's rogues gallery - Captain Cold, Captain Boomerang, Grodd, Reverse-Flash. But one we have yet to see in the television series is Mirror Master. His mirrors can produce any number of effects, like hypnotism, invisibility as well as project holograms. Whether or not they will use Sam Scudder or Evan McCulloch is still anyone's guess. Maybe we'll be introduced to Evan McCulloch by seeing him being imprisoned in the mirrorverse. That would be a unique way to set up a villain for Barry, and after all, it happened in Flashpoint.
4 More Reverse-Flash/Eobard Thawne
In Flashpoint, Reverse-Flash is responsible for changing history and orchestrated the entire thing as a way to eliminate the Justice League. It would make all the sense in the world if he returned in the third season and had some diabolical plans for the Flash and his world. Barry was able to stop Reverse-Flash from murdering his mother by simply knocking him out, but what happens when he comes to? Unless someone is able to lock him in a Flash-proof prison, there's not really much that can be done to contain him.
3 Barry and Iris Dating/Married
This one is certainly a no-brainer. They're together in the comics and we've been waiting two seasons to see Barry and Iris together but it still hasn't happened yet - except for a glimpse of it on Earth 2. But Grant Gustin and Candice Patton have great on-screen chemistry together and it's time we see that finally pay off. If Barry doesn't have his powers next season, that will save him from having excuses to not be with Iris. In the season 2 finale, Barry tells Iris that until he can fix what's broken within himself, he can't be with her. If Nora is still alive, he might finally feel like he can be whole, and start something with Iris - if she isn't already in a relationship, or dead, frankly.
2 Costume in the Ring
This is something that we've seen from Reverse-Flash in the first season, and we've been waiting for Barry to get one ever since. Cisco has been fascinated by how Thawne was able to fit his costume inside of a ring, yet, we haven't really seen him trying to construct one for Barry. In fact, there was probably no mention of it at all during this second season. It's possible that Barry won't have his powers in the third season, but eventually, once he gets them back - which he more than likely will - we need to see his costume ejecting from a ring on his hand.
1 Thomas Wayne as Batman
This one may not actually happen but it's still fun to hope. In Flashpoint, Barry drives to Wayne Manor looking for Bruce and runs into Batman. Turns out that Batman isn't Bruce Wayne, it's his father Thomas. During that night after the opera, Bruce was killed, sending Thomas over the edge. This Batman definitely has no problem with guns or killing and helped Barry get his speed back. One way around this is bringing in Robert Queen instead. On Earth 2, Oliver died instead of his father, leading to him eventually becoming the Green Arrow. And since Green Arrow is pretty much the Batman equivalent on the CW, the show may decide to go in that direction.