MADISON (WKOW) -- Superheroes assembled at the American Family Children's Hospital on Wednesday.

They scaled the walls and cleaned windows at the hospital, spreading cheer to patients and families who watched from inside.

The heroes are actually a group of technicians from Green Window Cleaning Services.

They said the best part was seeing the excitement on the kids' faces, something that makes the hard work worth it.

"It's amazing to be here and be some sort of joy to other people's lives and be interacting in that considering that most of the time what we do is a very dirty job," said technician Alexis Cross. "It's really cool to just be here and interacting and then seeing everyone smile and laugh and joke around."

This is the first time that the group has brought back the superhero

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