American Ninja Warrior: Ninja vs. Ninja

Past "Warrior" competitors race head-to-head on the mother of all obstacle courses.

In the second week of competition, David Campbell's NorCal Ninjas take on a powerhouse team featuring Ian Dory and Meagan Martin.

The third qualifying episode features Brent Steffensen and Kacy Catanzaro on Team Alpha. Other captains are Kevin Bull, leading The Expendabulls, plus Ryan Stratis and his team, Stratisfaction, along with Tremayne Dortch, and the Tre Amigoz.

Flip Rodriguez, and "the Cowboy Ninja", Lance Pekus lead two of the top teams in the fourth week of competition. Another strong group of ninja superstars competes in the fourth qualifying episode - led by Flip Rodriguez and his "Team Ronin". Lance Pekus is captain of "The Wild Bunch". Noah Kaufmann leads "The Think Tank", and Karson Voiles' team is called "Karsonic Boom".

Top Ninjas Geoff Britten, Elet Hall and Michelle Warnky are a few of the stars competing in the fifth qualifying week.

Ninja superstars Brian Arnold, Drew Drechsel, Jamie Rahn, and Abel Gonzalez lead their teams in this final qualifying episode, with the winner moving on to the Series Finals.

Featuring ninja superstars Meagan Martin and Flip Rodriguez.

The Cowboy Ninja Lance Pekus and Jesse "Flex" Labreck lead their teams on the side-by-side course.

A team made up of U.S. Olympians takes on the course, along with top female competitor Barclay Stockett.

Four teams of Ninja superstars battle on the side by side course, including top climber Ian Dory and David "The Godfather" Campbell.

Grant "The Island Ninja" McCartney and other popular Ninja athletes race side by side on a double obstacle course.

Ninja legends Brent Steffensen and Michelle Warnky join other superstar athletes racing on the side-by-side obstacle course.