"Family friendly" may not come to mind when thinking of John Cena. The pro-wrestler is now showing his softer side in "The Flintstones and WWE: Stone Age Smackdown."

The 37-year-old who entered the WWE in 2002 admitted he was once too edgy but says he's now got his attitude in check.

"I looked around and saw who was sitting in the audience and said, 'You know what, I proactively need to change.' And it was for the greater good," he told USA Today.

Cena, who has granted more than 400 Make-A-Wish Foundation requests, says he finds his work to be fulfilling.

"It gives you a feeling of self-worth at the end of the day," Cena said. "It becomes more than just a job — you feel as if you're affecting lives and that truly is pretty important."

Cena says he still understands the need for "different racy comedy" for his adult fans.

"I don't necessarily spend my time watching programs that 6- to 10-year-old kids enjoy...but at the same time I don't want to offend anyone in our audience so I do what I do to the best of my ability, and I actually really enjoy being able to be a real-life superhero and an aspirational character both in live entertainment and animation films like 'Flintstones.'"