American Ninja Warrior season 17 saw The Godfather of the series, long-time competitor David Campbell, crush the qualifiers once again, and in a chat with Screen Rant, he shared what goes into his training. David, who became involved with American Ninja Warrior in its first season, has become one of the show's most impressive competitors throughout the series' run. As one of the older ninjas competing on the series at this point, he's one of the most thorough, capable challengers viewers get the opportunity to see. Nicknamed The Godfather, David's serious about ninja, with a genuine love for the sport.
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