'American Ninja Warrior' hosts give us a sneak peek of the Vegas finals

Yahoo TV

What happened in Vegas didn’t stay in Vegas for American Ninja Warrior. The team behind NBC’s butt-kicking reality competition took us behind the scenes for a look at the ultimate smack down — the show’s National Finals in Las Vegas. Hosts Matt Iseman and Akbar Gbaja-Biamila and sideline reporter Kristine Leahy gave Yahoo TV a sneak peek at some of the familiar faces at the finals, including newly-signed WWE star Kacy Catanzaro and three-time ANW competitor Grant McCartney. There’s also pics of some diehard fans and future ninjas, the iconic Jumping Spider, and a look at the Ninja Warrior course all lit up in the nighttime sky. Click through to see all of our American Ninja Warrior snaps.

American Ninja Warrior airs Monday, Sept. 4 at 8 p.m. on NBC.

<p>As they gear up for the start of the National Finals shows from Las Vegas, #AmericanNinjaWarrior€™s Matt Iseman, Akbar Gbajabiamila, and Kristine Leahy are taking over Yahoo TV’s Instagram for the day. Follow along for a look at their exclusive behind the scenes pics and tune in to see the top athletes of the season compete on Monday, September 4 (8 p.m. ET/PT). </p>
Vegas, Baby!

As they gear up for the start of the National Finals shows from Las Vegas, #AmericanNinjaWarrior€™s Matt Iseman, Akbar Gbajabiamila, and Kristine Leahy are taking over Yahoo TV’s Instagram for the day. Follow along for a look at their exclusive behind the scenes pics and tune in to see the top athletes of the season compete on Monday, September 4 (8 p.m. ET/PT).

<p>Sneak peek of the #Vegas @ninjawarrior finals. — @akbar_gbaja </p>
Sneaking a Peek

Sneak peek of the #Vegas @ninjawarrior finals. — @akbar_gbaja

<p>#repost Great news! Matt, Akbar and I are taking over the @YahooTV account! Go check it out for some behind the scenes pics from the @ninjawarrior set! — @kristineleahy </p>
Three’s Company

#repost Great news! Matt, Akbar and I are taking over the @YahooTV account! Go check it out for some behind the scenes pics from the @ninjawarrior set! — @kristineleahy

<p>The Man’s got the moves, he’s got the feels, and oh he’s a pretty boss #NinjaWarrior. Nothing like hearing about the course first-hand from our #1 tester @IslandNinja — @akbar_gbaja </p>
Island Ninja

The Man’s got the moves, he’s got the feels, and oh he’s a pretty boss #NinjaWarrior. Nothing like hearing about the course first-hand from our #1 tester @IslandNinja — @akbar_gbaja

<p>Hanging with one of our amazing competitors #KacyCatanzaro before the show gets going. Kacy’€™s impact on our show cannot be over-stated and we will miss her as she moves to the #WWE! — @kristineleahy </p>
WWE-Bound

Hanging with one of our amazing competitors #KacyCatanzaro before the show gets going. Kacy’€™s impact on our show cannot be over-stated and we will miss her as she moves to the #WWE! — @kristineleahy

<p>#Repost @mattiseman: Hey America, #AmericanNinjaWarrior is taking over @yahootv! @kristineleahy @akbar_gbaja & I sharing behind the scenes shots from the finals in Vegas. #Gold </p>
Making ‘ANW’ Great Again

#Repost @mattiseman: Hey America, #AmericanNinjaWarrior is taking over @yahootv! @kristineleahy @akbar_gbaja & I sharing behind the scenes shots from the finals in Vegas. #Gold

<p>A view of the iconic Jumping Spider… I’m always tempted to try it. And then I remember I can’t jump and I am not a spider. — @mattiseman </p>
Spider, Man!

A view of the iconic Jumping Spider… I’m always tempted to try it. And then I remember I can’t jump and I am not a spider. — @mattiseman

<p>It’s time for a SMACK DOWN! Thanks for coming out to support the show @WWE Renee Young & Dean Ambrose! These two always bring the heat, but this time, I think Vegas took the cake with record breaking temps (I’m talking 117!). — @akbar_gbaja </p>
Hot Stuff

It’s time for a SMACK DOWN! Thanks for coming out to support the show @WWE Renee Young & Dean Ambrose! These two always bring the heat, but this time, I think Vegas took the cake with record breaking temps (I’m talking 117!). — @akbar_gbaja

<p>Another one of our incredible National Finals competitors is #DrewDrechsel – tune in to see how far he goes! — @kristineleahy </p>
Drew and the Crew

Another one of our incredible National Finals competitors is #DrewDrechsel – tune in to see how far he goes! — @kristineleahy

<p>It’s pretty awesome meeting future Ninja Warriors, especially when they strike a pose. #Flex — @mattiseman </p>
Strike a Pose

It’s pretty awesome meeting future Ninja Warriors, especially when they strike a pose. #Flex — @mattiseman

<p>I say it all the time, but we’ve got the best fans! Thanks for breaking-down this beast of a last name (and putting it on a shirt) — @akbar_gbaja </p>
Name Game

I say it all the time, but we’ve got the best fans! Thanks for breaking-down this beast of a last name (and putting it on a shirt) — @akbar_gbaja

<p>The coolest thing about hosting American Ninja Warrior is that we get the best seats in the house… — @mattiseman </p>
Top of the World

The coolest thing about hosting American Ninja Warrior is that we get the best seats in the house… — @mattiseman

<p>We shoot until the sun comes up. And when it does, the course takes on a whole different look. Stage 2 is coming… #Thunderdome — @mattiseman </p>
Pulling an All-Nighter

We shoot until the sun comes up. And when it does, the course takes on a whole different look. Stage 2 is coming… #Thunderdome — @mattiseman

<p>Just doing a little email and temperature check during a break – Yes it was still 105 degrees at midnight. — @kristineleahy </p>
Midnight Mail Check

Just doing a little email and temperature check during a break – Yes it was still 105 degrees at midnight. — @kristineleahy

<p>Oh we COUNTRY, especially when we’re Kickin’ it with John Rich– @akbar_gbaja </p>
A Little Bit Country

Oh we COUNTRY, especially when we’re Kickin’ it with John Rich– @akbar_gbaja

<p>Always great to see the sun come up in Vegas. I’m believe I’m thinking of trying that warped wall. More likely, I’m thinking of scrambled eggs and a nap. — @mattiseman </p>
A New Day

Always great to see the sun come up in Vegas. I’m believe I’m thinking of trying that warped wall. More likely, I’m thinking of scrambled eggs and a nap. — @mattiseman

<p>Our course looks incredible at night when it’s all lit up! — @kristineleahy </p>
Lights, Camera, Ninja!

Our course looks incredible at night when it’s all lit up! — @kristineleahy

<p>When the temperature doesn’t drop below triple digits even at night, you have to find a way to stay comfortable… and still SLAY with your sense of style. #Jorts — @mattiseman </p>
Fashion Statement

When the temperature doesn’t drop below triple digits even at night, you have to find a way to stay comfortable… and still SLAY with your sense of style. #Jorts — @mattiseman

<p>Here we are up in the booth –- getting ready for the start of the show! Lights, Camera, SHOW TIME! Vegas finals, lets do this! — @akbar_gbaja </p>
Showtime

Here we are up in the booth –- getting ready for the start of the show! Lights, Camera, SHOW TIME! Vegas finals, lets do this! — @akbar_gbaja

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