Before tonight's highly anticipated "Pretty Little Liars" season 5 finale, spoilers and rumors regarding the episode has generated some very interesting theories regarding the identity of "Big A."

In the sub-reddit for "Pretty Little Liars," the anonymous tipper known as Daisy has been revealing spoilers and answers prior to episode airing. Recently, the person also revealed some alleged finale spoilers which has fans buzzing.

The first and most controversial spoiler is that unlike previous teases, Uber A's identity will not be revealed during the season 5 finale.

"I don't know what Keegan was smoking because there was no A reveal," wrote Daisy. "Just another one of those moments where one of the liars is face to face with A and doesn't pull the mask off."

However, Daisy revealed that the Liars will suspect A to be a man likely named Charles.

With regards to "Big A" being a male, YouTuber iLoveSushi90x has a theory that Jason is guilty of being "Big A."

"I think Jason tried to kill Ali that night," wrote iLoveSushi90x. "Spencer thought that Alison had gone to Georgia in order to try and get her grandmother to cut Jason out of the will. It looks like Aria stabbed Jason in his hip [in episode 12 of season 3]. I think Mona and Jason tried to kill Aria."

Seeing these theories, other "Pretty Little Liars" fans chimed in, saying that Charles could be Jason's twin, playing into the popular twin theory.

"I think that Charles is Jason's twin/Paul Varjak," wrote Christopher Dudley.

"Alison had the evil twin, but on the show I think Jason has the twin who tried to hurt Alison when they were younger before they moved to Rosewood so he was committed. The phone call that night wasn't necessarily about Bethany, it could have been warning Jessica that her son was out of the sanitarium in Georgia. Charles hit Alison and that is who Jessica was protecting. She wanted to take him back to the sanitarium in Georgia, but he convinced her that he was Jason and the real Jason was committed in his place."