The Suicide Squad starts production this year and a new report indicates that the main characters for the James Gunn movie have taken center stage. They include four new members and possibly three returning members, though one is apparently being recast.

According to Collider, the four new members are Ratcatcher, Polka-Dot Man, King Shark and Peacemaker. They will reportedly join a new Deadshot, with Idris Elba in talks to replace Will Smith in the role. Margot Robbie is said to be returning as Harley Quinn, along with Viola Davis' Amanda Waller.

RELATED: James Gunn's Suicide Squad 2 Team Revealed

While Warner Bros. has yet to confirm or deny the reported roster, CBR breaks down each one and what they would bring to the Suicide Squad team.

KING SHARK

Of the team's new members, King Shark is the biggest name. In fact, Arrowverse fans just saw King Shark on The Flash, where he recently fought Gorilla Grodd in a battle of giant CGI monsters.

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King Shark originally appeared in Superboy Vol. 4 #0, where he fell to the hero. After being taken into custody, he was forced to join the Suicide Squad by Amanda Waller in a version of the team that included Deadshot and Captain Boomerang.

Later, King Shark became an enemy of Aquaman. DC Comics' New 52 continuity reboot reinvented the character as the offspring of a Hawaiian shark deity called Kamo, who became a criminal overlord in Atlantis. He was also part of the Suicide Squad during this time, making his first New 52 appearance in Suicide Squad Vol. 4 #1.

King Shark can live either underwater or on land, thanks to the fact that his mother was a human, and he equals Aquaman in strength. He is the only member of this new version of the team that has actual superhuman powers.

PEACEMAKER

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Out of the four new characters mentioned for The Suicide Squad, the only one that has an actor possibly lined up is Peacemaker. According to the reports, James Gunn has designs on recruiting Dave Bautista to play the role of this antihero.

Peacemaker originally appeared in 1966 in the pages of Fightin' 5 Vol. 1 #40. His entire reason for living is a paradox; he loves peace so much, he'll kill to keep it.

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In the comics, Peacekeeper was a man named Christopher whose father commanded a Nazi concentration camp. Later in life, he starts to see visions of his father, visions that drive him to excel in everything he does, leading him to join the Army during the Vietnam War.

After enlisting, he massacred an entire village of innocent people and went to prison. He was let out early in exchange for joining a U.S. government team called Project: Peacemaker. As his mental illness worsened and the excess of his violence increased, he was later inducted into a group called the Shadow Fighters by Suicide Squad mastermind Amanda Waller.

RATCATCHER

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Ratcatcher was originally introduced in Detective Comics #585 as a man named Otis Flannagan. The Suicide Squad, however, will reportedly genderswap the role and cast a female actor in the role.

In comics continuity, Otis was a ratcatcher in Gotham City who claimed he could train rats to attack. He was later sentenced to a 10 year prison sentence when he stabbed a man to death in a fight. When he got out of jail, Otis took on the identity of Ratcatcher and sought revenge against the people responsible for his arrest and conviction.

It turned out he wasn't kidding about his ability to train rats to serve him. In addition to this rather creepy ability, he also had skills in chemistry which he'd use to create poison gas.

Not only will Ratcatcher in the movie be female, the script reportedly has Deadshot playing a surrogate father role to the young villain, taking a strong interest in her well-being.

NEXT PAGE: The Suicide Squad's Final New Recruit Is Also Its Weirdest

POLKA-DOT MAN

Polka Dot Man

In The LEGO Batman Movie, when the Joker is running down his list of ridiculous sounding villains, only truly hardcore DC fans could recognize every name on the list. One name on his list that fits the idea of a wonderfully obscure, absolutely ridiculous bad guy perfectly is Polka-Dot Man.

Much like Ratcatcher, Polka-Dot Man is a Batman villain, first appearing in Detective Comics #300, a villain named Abner Krill who wanted to start a crime wave based on dots and spots around Gotham City.

Seriously.

At first, he could pull dots off his costume and use them as weapons, such as explosive devices. Later, the dots no longer were removable, and he simply used a bat as a weapon. He was eventually beaten into traction by Harvey Bullock, which caused him to sue Gotham City in Batman: GCPD #1.

DEADSHOT

When Will Smith left the role due to scheduling conflicts, it seemed like Warner Bros. might just remove the character from the team. However, it now looks like Idris Elba is in talks to replace Smith, allowing James Gunn to keep the sharpshooter in the franchise.

As shown in the last movie, Deadshot has a daughter, and really wants to get out of the life of crime for her. his road to redemption was one of the main arcs of the film, resulting in him getting time see her after their mission, though he would ultimately returning to Belle Reve Penitentary where he and most of the rest of the team still resides.

RELATED: Suicide Squad Sequel Eyes Idris Elba to Replace Will Smith's Deadshot

His first appearance in the comics came in 1950's Batman #59, where he arrived as a costumed vigilante who worked with Commissioner Gordon. Batman soon discovered it was a ruse, that Deadshot was actually a villain who used a heroic facade to distract the police.

The character has been a member of the Suicide Squad since it was reinvented in the '80s. He remains one of the most recognizable members of the team of antiheroes and villains.

RELATED: Suicide Squad Sequel Eyes Idris Elba to Replace Will Smith's Deadshot

HARLEY QUINN

Harley Quinn is the only member of the Suicide Squad from the first movie to not remain in prison, as Joker helped disconnect her explosive device earlier in the film and then broke her out at the end. While Margot Robbie will next appear in Birds of Prey, it is also believed that she will return for The Suicide Squad as well.

RELATED: Harley Quinn Will Return for Gunn's Suicide Squad

Unlike the other members of the team, Harley Quinn was not introduced in the pages of comic books. Instead, her first appearance was in Batman: The Animated Series. She was so popular, that she was eventually added to DC Comics continuity as well.

Harleen Quinzel was a psychiatrist who was tasked with working with Joker. She ended up falling in love with him, and he drove her to insanity. It was always an abusive relationship, one which came to a head in the original Suicide Squad film when we see a flashback of Joker dropped her into the vats of acid to bleach her skin to prove her loyalty and make her more like him.

Written and directed by James Gunn, The Suicide Squad is set to hit theaters Aug. 6, 2021.