James Gunn, the co-CEO of DC Studios and director of the highly anticipated Superman film set to soar into theaters on July 11, 2025, has made a bold promise to fans: his Man of Steel, portrayed by David Corenswet, will be free of fake muscles and CGI-enhanced physiques, embodying a “completely natural” look. Speaking with palpable excitement during a press event in Cleveland, where much of the film was shot, Gunn declared, “Wait until July, I hope this will be a successful Superman.” This commitment to authenticity, paired with a return to Superman’s classic costume—complete with the iconic red trunks—has ignited fervent debate among fans and critics. Gunn’s vision, shaped by Corenswet’s insights and a deep respect for the character’s legacy, aims to deliver a Superman who is both a timeless symbol of hope and a relatable figure for a modern audience.

Since his debut in 1938’s Action Comics #1, Superman, created by Jerry Siegel and Joe Shuster, has been defined by his vibrant blue suit, red cape, and chest emblazoned with the S-shield. The red trunks, inspired by the circus strongmen and wrestlers of the era, were a hallmark of his design, symbolizing strength and approachability. However, when Zack Snyder’s Man of Steel introduced Henry Cavill’s Superman in 2013, the trunks were replaced by a sleek, armored suit, aligning with a darker, more grounded tone. The decision, echoed in DC’s New 52 comics, sparked backlash from fans who felt the trunks were integral to Superman’s identity. Their return in 2018 comics and now in Gunn’s film reflects a growing sentiment that these elements are not just nostalgic but essential to the character’s essence.

Gunn’s journey to this “natural” Superman was a collaborative evolution. Early in pre-production, he leaned toward a trunkless design, much like Snyder, who had tested over 80 costume variations for Man of Steel without finding a modern take on the trunks that worked. “I was like, ‘No trunks, no trunks,’” Gunn admitted in a Variety interview. The costume team explored countless iterations, balancing comic accuracy with contemporary aesthetics. It was David Corenswet who offered a perspective that changed Gunn’s mind. Corenswet argued that Superman, as an alien with near-godlike powers, could intimidate humans, particularly children. “He’s got laser eyes, can lift a building,” Corenswet explained. “But he wants to be approachable, a symbol of hope. So he dresses like a wrestler, bright and colorful, to seem friendly.” This resonated with Gunn, who saw the trunks as a deliberate choice by Clark Kent to bridge his Kryptonian heritage with his human upbringing.

The “no fake muscles” mantra is equally central to Gunn’s vision. Unlike many superhero films that rely on CGI or padded suits to exaggerate physiques—think Chris Hemsworth’s Thor or Robert Downey Jr.’s Iron Man—Gunn insisted on showcasing Corenswet’s natural build. Reports indicate Corenswet gained nearly 20 pounds of muscle through rigorous training and a high-protein diet, achieving a physique that is impressive yet believable. “David’s a real Superman,” Gunn told Collider. “No digital enhancements, no fake abs. What you see is what he earned.” This approach aligns with the film’s narrative, described as a “workplace origin story” focusing on a young Clark Kent navigating his role at the Daily Planet while embracing his powers. By avoiding artificial enhancements, Gunn emphasizes Superman’s humanity, reinforcing that his strength comes not just from Krypton but from his heart.

The decision has stirred both excitement and skepticism. Leaked set photos from June 2024, showing Corenswet in a vibrant suit with red trunks, yellow belt, and a Kingdom Come-inspired S-shield, thrilled fans craving a comic-accurate Superman. A Reddit thread exploded with comments like, “This is MY Superman! Corenswet nails the hopeful vibe.” Yet, others questioned whether the trunks and natural physique could resonate with audiences accustomed to hyper-polished superhero visuals. A user on X remarked, “No CGI muscles? Bold, but it might look underwhelming next to MCU’s jacked-up heroes.” The debate mirrors a 2023 fan poll Gunn conducted, where 60% of 150,000 voters favored the trunks, though he clarified the poll was non-binding. Critics argue the trunks risk making Superman appear dated, while supporters, including comic writer Gail Simone, praise them as “a badge of his optimistic spirit.”

The first trailer, released in December 2024, offered a glimpse of Gunn’s vision: a battle-worn Superman rising with resilience, his natural physique and colorful suit standing out against a gritty Metropolis backdrop. The trailer teased Clark’s interactions with Lois Lane (Rachel Brosnahan) and Lex Luthor (Nicholas Hoult), hinting at a story that balances personal growth with epic stakes. Gunn’s Superman is the cornerstone of the new DCU, setting the stage for characters like Green Lantern and Hawkgirl. His commitment to authenticity extends beyond the costume, aiming to capture Superman’s core as a hero who inspires through kindness and relatability.

Gunn’s track record with The Suicide Squad and Guardians of the Galaxy lends credibility to his bold choices. His decision to forgo CGI enhancements and embrace the trunks is not mere nostalgia but a storytelling choice rooted in Superman’s dual identity. As Grant Morrison noted in Supergods, the trunks signify “extraordinary strength and endurance,” a nod to their 1930s origins. Corenswet’s natural build and the playful costume reflect a Superman who chooses to be human, even as he wields godlike power. With July’s release approaching, anticipation is sky-high. Gunn’s hope for a “successful Superman” rests on a vision that honors tradition while forging a new path. Whether soaring over Metropolis or standing in the Daily Planet, this Superman promises to be a beacon of hope, grounded in authenticity and heart.