“I am a champion, and you’re going to hear me roar … roar-rrr-rrrr-rrr!”

Hundreds of children bounced in their seats and belted out the Katy Perry tune as they watched their doctors, nurses and other caregivers defeat the Grinch.

The children and their families came together for three showings of the 27th annual Spectrum Health Helen DeVos Children’s Hospital pediatric hematology and oncology holiday production.

Hosted at the Grand Rapids Public Museum, the event is an opportunity for current and past patients and their families to celebrate the season together while watching their caregivers act, dance, sing, and generally be silly (cue James Fahner, MD, in his tutu).

“One of the most touching things we are seeing is families making this a holiday tradition,” said Dr. Fahner, the division chief for hematology and oncology at Helen DeVos Children’s Hospital, who is always a favorite among patients. “It’s great to see the joy of childhood come to their eyes.”

This year’s production featured the Incredibles and other superhero kids coming together to save Santa, who has been named an outlaw superhero by the mayor of a town. The mayor, who happens to be the Grinch in disguise, says Santa needs to be jailed because he is breaking into homes and leaving behind reindeer droppings on roofs.

The Incredible kids couldn’t let that happen. They text all the other super kids they know and, together, they put an end to Santa being locked up so he can continue to deliver gifts around the world.

Lilly Loding, who spent a lot of time in the hospital as a young child to combat Langerhans cell histiocytosis, couldn’t hide her excitement about the production, and about seeing her favorite doctor, David Dickens, MD, as he played the guitar.

“It’s about the Incredibles!” she exclaimed. “I’ve seen both (movies). I’m excited to see Santa tonight.”

Her mom shared that the event is almost like a family reunion for many families, as children who are in remission miss their caregivers.

Another family who visits the children’s hospital much less these days is that of Lilly Vanden Bosch, who spent months in the hospital in 2015 for a bone marrow transplant as part of her recovery from severe aplastic anemia.

“I’m so used to seeing everyone in scrubs,” Lilly said. “It’s great to see them on stage being more than just doctors and nurses.”

“They’re like family,” her mom, Meg, added.