Yet another way to invoke ninja cat emoji awesome-sauce is to order the Ninja Cat Emoji t-shirt. The eight-color emoji is emblazoned on the front of the t-shirt.

Kids are Tops Sports Center in Centerville recently rolled out its Ninja Kids classes for aspiring ninjas as young as 4 and up to 12 years old.

The new Hybrid Ninja Academy in Lancaster has obstacles that will be familiar to those who watch "American Ninja Warrior" on NBC. Many of them have been scaled down for kids.

The “American Ninja Warrior” phenomenon has only grown since the show debuted in 2009 on G4 and later moved to NBC, with at least four gyms in Atlanta devoted to ninja-like obstacle courses ...

Kids are loving homemade Ninja Warrior courses. Picture: YouTube From a field of 250, the final 20 Ninjas are set to take on the Australian Ninja Warrior course in the show’s grand final.

SUNBURY, Pa. — It's open gym time at USA Ninja Challenge in Sunbury, and the kids are taking full advantage. The former Edison School in Sunbury was recently turned into a kids-based "ninja" gym ...