With few episodes left before the first season wraps up, some "The Flash" TV season 1 spoilers might have just surfaced. One of Flash's arch nemeses, Gorilla Grodd, is said to be dealt with in Season 1. Also, Atom will be making his debut in tonight's episode, "All-Star Team-up."

If fans will look at upcoming episodes of "The Flash" season 1, episode 21 is yet to have a title. Although this does not guarantee the episode will be dedicated to Grodd, executive producer Greg Berlanti confirmed that Grodd will indeed make his debut in season 1.

"I wouldn't say teased. I would say we're going to deal with it this year," he said. "The comparison I make is a little bit to Slade the first year on Arrow in the sense of we started with the mask in the pilot and then we saw which way we were going. He was, ultimately, in the back half of that first season even more than we would ever do with Grodd this first year because... We're going to have to get the technology right and all the stuff right to make it look and feel real."

He continued, "but a lot of times, we do this stuff not as a tease as much as a challenge to ourselves of, 'Can we do it?' Grodd's definitely one of those, so we hope we pull it off."

In fact, Gorilla Grodd was seen on episode 14 entitled "Fallout" when Reverse Flash brought General Wade Eiling and Grodd dragged him deep down to the sewers.

In tonight's episode, Brandon Routh will be making his debut as the Atom and here are some sneak peeks of him wearing the Atom suit. Watch the videos below.