The Seahawks linebacker and two-time leading tackler can be found toting his turtle-shelled backpack around the locker room on a daily basis. He likes to pack it with him on road trips, too.
But if you've been in the sewers on Wagner's affection for the human-like crime fighters, it's worth knowing where his devotion to the fictional characters began.
"As young kid I was watching it all the time," Wagner said of the Ninja Turtles cartoon series this week from Renton's Virginia Mason Athletic Center. "My mom would always have it on for me - she knew what time I got up, so she would always turn it on. All I had to do was just wake up and go to the living room.
"I had their birthday cakes, toys, stuff like that," Wagner added. "As I got older, it still was around, so I always paid attention to it. I always watched it [on T.V.]. If there was a new toy, I'd buy the new toy and I started getting backpacks for my birthday."
But even though Wagner managed a sneak-peak of his childhood-turned-adulthood craze, the turtle-loving linebacker said he still has plans to visit the big screen after the movie hits theaters today, Aug. 8.
"I'm a fan," Wagner said. "I probably will see it more than 10 times within the first week."
Like the Seahawks, the Ninja Turtles boast several unique features and personalities. From their blue-masked sword-swinging leader Leonardo to the easy-going orange-masked jokester Michelangelo, and from the brainy purple-masked Donatello to the rough-edged red-masked Raphael, the Ninja Turtles mimic many traits you might find in an NFL locker room.
With that in mind, we let Wagner have some fun at his teammates' expense. Here's what he had to say when asked which Seahawks other than himself best represent his teenage mutant friends:
Master Splinter is...
Wagner: "It's got to be Coach [Pete] Carroll. Coach Carroll gives all the positivity and then the butt kicking when you're doing something bad. But then again, Splinter could be coach [Ken] Norton [Jr.], too, because coach Norton can definitely do some butt-kicking."