Jared Leto promises his 'Joker' portrayal will make Heath Ledger, Jack Nicholson 'proud'

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Jared Leto Isolated Himself From Rest Of Suicide Squad Cast

Jared Leto has big shoes to fill when he plays The Joker in the upcoming film, "Suicide Squad."

While the actor has already won over many fans with his creepy, tattooed depiction — it's the actors who have played the iconic character before him who he wishes to impress.

Leto posted a black and white image on Instagram Monday featuring Jack Nicholson and the late Heath Ledger as the Batman villain with the caption: "Don't worry, Leto will make us proud."

Ledger played the part in 2008's "The Dark Knight," which was released after his death, while Nicholson's role in 1989's Batman alongside Michael Keaton.

Related: Look back at Jared Leto's changing style"

21 PHOTOS
Jared Leto's different looks
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Jared Leto promises his 'Joker' portrayal will make Heath Ledger, Jack Nicholson 'proud'
Jared Leto speaks at the PEN Center USA's 25th Annual Literacy Awards Festival at the Beverly Wilshire Hotel on Monday, Nov. 16, 2015, in Beverly Hills, Calif. (Photo by Matt Sayles/Invision for PEN Center USA/AP Images)
Actor/musician Jared Leto arrives at the Hollywood Life 6th Annual Breakthrough of the Year Awards in the Hollywood section of Los Angeles on Sunday, Dec. 10, 2006. (AP Photo/Matt Sayles)
U.S. actor Jared Leto poses for the photo call of the film ' Mr. Nobody ' at the 66th edition of the Venice Film Festival in Venice, Italy, Friday, Sept. 11, 2009. (AP Photo/Domenico Stinellis)
Actor Jared Leto attends The Runaways premiere after party hosted by Bing at the 2010 Sundance Film Festival in Park City, Utah on Sunday January 24, 2010. (Jack Dempsey / AP Images for Bing)
The singer of the american band 30 Seconds to Mars, Jared Leto, performs at the MTV European Music Awards 2010 concert, in Independence Square, Madrid, Sunday, Nov. 7, 2010. (AP Photo/Angel Navarrete)
Artist Jared Leto appears at Fast Company Innovation Uncensored at Metropolitan Pavilion Thursday, April 28, 2011 in New York. (Matt Peyton/AP Images for Fast Company)
Jared Leto visits New.Music.Live. at the MuchMusic Headquarters on Thursday, Sept. 13, 2012, in Toronto. (Photo by Arthur Mola/Invision/AP)
Singer Jared Leto of 30 Seconds To Mars visits New.Music.Live. at the MuchMusic Headquarters on Friday, May 10, 2013, in Toronto, Canada. (Photo by Arthur Mola/Invision/AP)
Jared Leto, of 30 Seconds to Mars performs at the 2013 KROQ Weenie Roast at the Verizon Wireless Amphitheatre on Saturday, May 18, 2013 in Los Angeles. (Photo by Katy Winn/Invision/AP)
Jared Leto seen on top of the O2 Arena in London on Tuesday, June 18, 2013. 30 Seconds To Mars are scaling the O2 Arena to announce their new tour in November. (Photo by Mark Allan/Invision/AP)
Jared Leto seen at Focus Features 'Dallas Buyers Club' Premiere at 2013 TIFF presented by Audi, on Saturday, Sep, 7, 2013 in Toronto. (Photo by Eric Charbonneau/Invision for Focus Features/AP Images)
This Sept. 9, 2013 photo shows Jared Leto, a cast member in the film "Dallas Buyer's Club," at the Toronto International Film Festival in Toronto. It's been nearly six years since Jared Leto acted. But even though his band, 30 Seconds to Mars, had become his full-time gig, Leto was drawn back to movies by "Dallas Buyers Club," in which he plays a transgender person suffering from AIDS. (Photo by Chris Pizzello/Invision/AP)
Best Supporting Actor Jared Leto attends the 79th Annual New York Film Critics Circle Awards at the Edison Ballroom on Monday, Jan. 6, 2014, in New York. (Photo by Evan Agostini/Invision/AP)
Jared Leto arrives at the 15th annual InStyle and Warner Bros. Golden Globes after party at the Beverly Hilton Hotel on Sunday, Jan. 12, 2014, in Beverly Hills, Calif. (Photo by Matt Sayles/Invision/AP)
Jared Leto arrives at The Hollywood Reporter Toasts the 2014 Oscar Nominees on Monday Feb, 10, 2014 in Beverly Hills, Calif. (Photo by Richard Shotwell/Invision/AP)
Jared Leto poses for a portrait during a press junket to promote his documentary film, "Artifact," at the BLVD Hotel on Wednesday, April 16, 2014 in Studio City, Calif. The film directed by Leto (as Bartholomew Cubbins) premieres on VH1 and Palladia on Saturday, April 26, 2014. (Photo by Jordan Strauss/Invision/AP)
Jared Leto poses in the press room at the 20th annual Critics' Choice Movie Awards at the Hollywood Palladium on Thursday, Jan. 15, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Actor and singer Jared Leto arrives at Balmain's ready-to-wear fall-winter 2015/2016 fashion collection, part of the Paris Fashion week, and presented in Paris, France, Thursday, March 5, 2015. (AP Photo/Francois Mori)
Photo by: Dennis Van Tine/STAR MAX/IPx 11/9/15 Jared Leto at the Glamour Women of the Year Awards. (NYC)
Jared Leto attends LACMA 2015 Art+Film Gala at LACMA on November 7, 2015 in Los Angeles, California.(Photo by Jordan Strauss/Invision/AP)
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For his portrayal, a heavily made-up Leto flaunts a mop of bright green hair and is covered in tattoos, most notably a twisted smile on his stomach.

"Suicide Squad," written and directed by David Ayer, hits theaters on Aug. 5, 2016.

The new take on the comic book movie genre also stars Margot Robbie, Cara Delevingne, Scott Eastwood, Ben Affleck, Jai Courtney, Viola Davis,Common, Ike Barinholtz and Adewale Akinnuoye-Agbaje, among others.

See photos from the set of 'Suicide Squad' below:
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Suicide Squad set photos
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Jared Leto promises his 'Joker' portrayal will make Heath Ledger, Jack Nicholson 'proud'
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto, a truck spilling water on the pavement, the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto,action camera car entering the set, the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto,the film crew putting more water on the street,the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto, main car in the production,the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto, hero car in the production,the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto, crowds trying to watch,the movie required the closure of Yonge St. between College and King streets. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
YONGE STREET, TORONTO, ONTARIO, CANADA - 2015/05/27: Suicide Squad movie filming or shooting in downtown Toronto, beautiful rainbow appeared on the set, the movie required the closure of Yonge St. between College and King streets Weather forecast was 40% of rain, however, no rain fell during the night and production continued all night. (Photo by Roberto Machado Noa/LightRocket via Getty Images)
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