Grant Gustin news: the actor has teased another much anticipated comic book villain The Reverse Flash.

This character remains mystery. Some fans of "The Flash" TV series predict that Harrison Wells (Tom Cavanagh) is the Reverse Flash. However, Executive producer Geoff Johns told The Hollywood Reporter, "Harrison Wells is a new character that was created. The name obviously is brand-new. I don't think we can say anything else about it."

So if ever, Harrison Wells is not the Reverse Flash, some fans theorized that he could be the Barry Allen in the future.

In Season 1 episode 6, Reverse Flash appeared. In the first episode, the Reverse Flash is the yellow light. He appeared in the house of Barry Allen's house (when he was a kid) and murdered his mom. Then the following episode, it was revealed that Harrison Wells is only pretending he can't walk.

There are more mysteries that need to be unveiled. A related news about Grant Gustin, We Got Discovered reported with the headline "Grant Gustin Teases Reverse Flash's Upcoming Debut On The Flash."

According to the publication, executive producer Andrew Kreisberg promised that the TV series is "building towards a confrontation between Barry and Reverse Flash."

The former "Glee" actor Gustin gave a bit more detail and seemed confirming that the two speedsters (Reverse and The Flash) will come face to face in the mid-season finale in two weeks. He said, "Barry will actually come face to face with him, not just running with him, but standing face to face with him, looking at him. He's vibrating, so he doesn't know who he is. We don't see his face. No characters see his face and the audiences doesn't necessarily see his face either, but Barry gets to hear him say that he killed his mom... We have a huge fight that we shot in the football stadium in Vancouver. That was huge."

He also added, "I didn't even remotely see coming what Andrew Kreisberg told me is going to be one of the turning points with that storyline. I've heard so many theories surrounding Reverse Flash that are all interesting. I was like, 'Oh, I know what's going on,' but literally no one knows what's going on. Anyone who thinks they know what's going on is wrong. I'm n the in and I thought I knew, but Andrew told me and I was like, 'Holy crap.'"