4-year-old becomes 'real-life superhero' to his baby brothers

Michael, 4, was a perfect match to be a bone marrow donor for his infant twin brothers, who were born with a rare disease.
1:06 | 05/04/18

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Transcript for 4-year-old becomes 'real-life superhero' to his baby brothers
Now to a real-life superhero ho is just 4 years old. Little Michael helped save the lives of his infant twin brothers born with a rare disease that increases their risk of infections, only about 1 in 200,000 people have it. Well, it turns out Michael was a perfect match to be their bone marrow donor. His mom told a local station that when she asked him if he wanted to do it, he told her, quote, I I'm a real-life superhero. I'm going to save my baby brothers. Take a look at his reaction when he finally got to take them home. I saved you guys. It's time to go home. Super Mike. He's not going to hold that over them at all. I saved you. Now it's time to go home. Michael's mom says he was excited to help and wasn't afraid at all. He wrote on Facebook, not all heroes wear capes. But he does. Michael is a real-life superhero and I could not be any more proud. Weaver too. Yes, yes. Really a great story. Surely is. They will never forget it. He won't let them. He won't let them. Very happy for the family.

This transcript has been automatically generated and may not be 100% accurate.

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