Eminem’s life is no stranger to the spotlight, but behind the scenes, few people had a greater impact on him than his best friend and fellow rapper, Proof. A founding member of D12, Proof (born DeShaun Holton) was more than just a partner in rhyme—he was a brother to Eminem and an integral part of his journey. Despite his influence on the Detroit hip-hop scene and Eminem’s career, many fans don’t know the full story behind Proof’s legacy. Here are seven surprising facts you probably didn’t know about Proof, Eminem’s closest friend.

1. Proof Was Eminem’s Biggest Supporter Before the Fame

While Eminem struggled to get his foot in the door of the hip-hop industry, Proof was there every step of the way, encouraging him. Long before Marshall Mathers became Slim Shady, Proof saw Eminem’s potential. He helped him navigate the underground rap battle circuit in Detroit and was instrumental in introducing Eminem to local venues, even before his rise to stardom.

2. Proof Played a Pivotal Role in the Creation of D12

D12, or the Dirty Dozen, was a group of six Detroit rappers, including Eminem and Proof. However, the idea behind D12’s alter egos came from Proof himself. He envisioned a group where each member would have an alternate persona, doubling the group’s lineup in spirit. Proof’s idea set the tone for D12’s distinctive style and creative identity.

3. He Was Eminem’s Hype Man and Biggest Stage Ally

Many fans recognize Proof as Eminem’s right-hand man on stage. Acting as his hype man, Proof energized crowds and supported Eminem during performances, especially during the early years of his career. Their on-stage chemistry was undeniable, helping solidify Eminem’s reputation as one of the greatest live performers in hip-hop.

4. Proof Had a Flourishing Solo Career

While most fans know Proof from D12 and his collaborations with Eminem, many might not realize that Proof had a successful solo career of his own. His debut album, Searching for Jerry Garcia, was a testament to his lyrical prowess and artistic vision. Released in 2005, it showcased his depth as an artist, touching on personal and social issues beyond his group work.

5. He Was a Humble Mentor in the Detroit Hip-Hop Scene

Proof wasn’t just a star—he was a mentor to many rising artists in Detroit’s underground scene. He believed in elevating local talent, offering guidance and opportunities to younger rappers. His humility and commitment to the community earned him widespread respect, making him a beloved figure not just for his music, but for his role in fostering the city’s hip-hop culture.

6. Proof and Eminem’s Friendship Was Immortalized in “Like Toy Soldiers”

Eminem’s song “Like Toy Soldiers” is a heartfelt tribute to Proof, detailing the pain and struggles of losing close friends to violence in the hip-hop world. The music video poignantly depicts Proof’s fictional death, eerily foreshadowing the tragic real-life events that would take place just a year later when Proof was fatally shot. The song remains one of Eminem’s most personal and emotional tracks, cementing the bond they shared.

7. Proof’s Tragic Death Left a Lasting Impact on Eminem

On April 11, 2006, Proof was shot and killed in Detroit, an event that devastated Eminem and the hip-hop community. Proof’s death sent Eminem into a deep depression, influencing his later music and life. The emotional toll was so severe that Eminem stepped away from the public eye for several years. To this day, Proof’s legacy is a constant presence in Eminem’s work, with several references in his music honoring his late friend.

Proof’s influence on Eminem’s career and the broader Detroit rap scene is undeniable. As Eminem himself has often said, he wouldn’t be where he is today without his best friend, DeShaun “Proof” Holton. Though he may be gone, his legacy lives on through the music, the friendships, and the city he helped shape.