50 Cent and Tony Yayo50 Cent may be known for controversy, but he’s not such a bad guy. He gives a lot too, not just money to charity, but also his time.

Recently, he and G-Unit member Tony Yayo registered as possible bone marrow donors in an effort to help 11-year-old Broadway star Shannon Tavarez, who was recently diagnosed with leukemia.

Fif’, Yayo and Young Hot Rod were swabbed at DKMS America, the world’s largest non-profit marrow donor center, which they documented in a viral clip for his official website ThisIs50.com.

“My son is just a couple years older than Shannon and I can’t imagine if his life was needlessly cut short when there is someone out there that could save him,” 50 said in a statement. “Shannon’s chances of finding a matching donor are slim because she’s African American and Dominican and minorities are underrepresented in the national registry.

“Everyone, regardless of their race or ethnicity, deserves a fair chance at life. Registering to become a bone marrow donor starts with a cheek swab, but it’s more than that. It’s a commitment to save a life,” he continued.

To join the registry yourself, which 50 is promoting, visit GetSwabbed.org.

Check out the video of 50’s visit below: