The defensive end has spent the past day visiting survivors. That includes Chase Yarborough, one of the student's shot in Friday's attack at Santa Fe High School.
Chase's mom says Watt showed up to their home to comfort chase without any cameras or fanfare.
Watt's kindness was appreciated by family members and those in the community who aren't even fans of professional sports.
"I'm not a football fan really, but yeah, I am a fan of his because of the way he respects people, basically," said Clear Lake resident Tiffany Davis.
Watt also stopped by Clear Lake Regional Medical Center to visit student Clay Horn.
A picture from Horn's GoFundMe page shows his injured arm as he stands next to Watt. Horn could have more surgery Tuesday.
On Monday, Watt also visited with other families affected by the shooting and the staff taking care of those who were wounded.
Another student injured was Sarah Salazar. Salazar will need several surgeries to recover from her injuries.
Her aunt posted the picture Sarah took with Watt in the hospital.
Thank you thank you @JJWatt for coming to see Sarah today. Even though she is not allowed to talk to much she has this huge smile on her face and keeps rambling on about you! You made her feel so special today it means so much to see that beautiful smile on her face! ❤️— Bri 💗 (@briannahuuston) May 21, 2018
"The fact that he wasn't seeking any sort of publicity shows what kind of a guy he is. That it was something he wanted to do for them, not for his benefit," said Clear Lake resident Tal Hammock.
Family members of the teenagers said that Watt treated them like family, finding out how they were and making them smile.
He also announced Friday that he would pay for the funerals of all the victims in the tragedy.
VIDEO: JJ Watt to pay for funerals of all Santa Fe HS victims