8 of the wackiest DC characters James Gunn considered for 'The Suicide Squad'

"When I first considered taking the job of writing #TheSuicideSquad I kept a file folder of characters I was considering. Here are just a few (of many) that didn't make the cut," Gunn tweeted.

He added that every character in "TSS" was "chosen for a purpose, great or small." Some characters, though he loved them, didn't make sense for the story he was trying to tell.

Below, find some of the more obscure characters who Gunn considered including, and, if known, the reason why they didn't make the squad.

If you grew up watching "Batman the Animated Series," you'll recognize the character as the scientist, Dr. Robert Kirkland Langstrom, who transformed into a humanoid, feral bat after a lab test gone wrong.

Though the character started out as a villain, he was later shown to be more of an anti-hero.

"In a lot of ways, Man-Bat is one of my favorite characters. I really kind of wanted to do Man-Bat, but I think I chose Weasel instead and King Shark instead," Gunn told Buzzfeed during a virtual Q&A after an early screening of the film, which Insider attended.

Introduced in 1962, Chemo was initially a villain for the hero group, Metal Men.

Chemo is a plastic container that's brought to life after a scientist pours a failed formula into it. In the comics, he's crossed paths with Lex Luthor and Batman.

If he wasn't a supervillain spewing toxic waste at whatever comes his way, he would almost be a bit cute.

The Rainbow Creature comes from a volcano in South America. Each of his radiant four colors has a different power: fire, freeze, vaporize, and the ability to flatten items.

His story certainly aligns with that of "The Suicide Squad," given that he appeared during a time of political unrest and rebellions. The creature winds up turning Bats and the boy wonder into flat 2D versions of themselves during a fight.

Gunn hasn't addressed why Rainbow Creature was passed over, but it's possible he was an alternative idea for Polka-Dot Man, whose many different colored spots all contain different abilities in the comics.

"I have had a Bat-Mite statuette on my desk in my office for many years. Bat-Mite is perfect and creepy," Gunn tweeted back in 2020.

The trickster Batman villain looks like a small child in an over-sized Batsuit. The character, who worships Batman, uses tech from the fifth dimension to, more or less, be a nuisance to his hero.

Unsurprisingly, he usually angers Batman.

The original version of Plastique was a woman who had plastic bombs attached to her outfit. It didn't sound like the smartest idea.

The non-speaking character has a penchant for taking pups and welding them to people's faces.

Gunn told a fan on Twitter that, as an animal lover, he wasn't sure he personally wanted to see the character "expressed cinematically."

The husband and wife thieves have a child. Fans have pointed out that their relationship is one that should be rooted for instead of the toxic one between Harley and Mister J.

The list of more recognizable villains who were almost in Gunn's "The Suicide Squad" includes Bane, Livewire, Solomon Grundy, Killer Frost, Mr. Freeze, Deathstroke, and Katana.