Welcome to Impractical Jokers! Even though Impractical Jokers is mostly about the four main guys -- Joe, Murr, Sal and Q -- there are a lot of people behind the scenes who are also very important.

Casey Jost is one of those people. He is a writer and producer of IJ and also hosts Impractical Jokers: Inside Jokes. Inside Jokes gives viewers a unique, behind-the-scenes look at some of their favorite IJ episodes. Notes come up along the bottom explaining why the guys said certain things or to provide more information about the tasks. Jost is the host of the behind-the-scenes show, and in between showing clips, he interviews fans, asking them questions about the show and explaining scenes.

Despite Impractical Jokers starting in 2011, Inside Jokes debuted in 2016. With COVID-19 and a major change to the show, will Inside Jokes continue?

Who is Impractical Jokers' writer, Casey Jost? Here's what we know about him.

10 Casey Jost's Early Life

Casey Jost was born on June 17, 1985, in New York City, NY, near Staten Island. Jost's parents are Kerry Kelly, the Chief Medical Officer for the New York City Fire Department and Daniel Jost, a former teacher at Staten Island Technical High School. Raised as a Roman Catholic, alongside his brother, Jost attended Regis High School in Manhattan. He is very proud of his New York roots.

You might have heard of another New Yorker with the same last name. Well, that's because Casey's brother is Saturday Night Live's Colin Jost. Colin is his older brother, who has also written for TV and is a social media personality. Casey has also been a writer on SNL for a long time and has probably written multiple skits for his brother, who hosts Weekend Update.

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8 Casey Jost's Personal Life

Jost has been married to Lisa Kleinman since June 2014. They began dating in the early 2010s. Kleinman is a producer, actress and writer known for UCB Comedy Originals, New York Lately, The Cicada Hunk and more. It does not appear that Jost has any children. If he does, he does not post about them, but he does have a nephew from his brother and sister-in-law, Scarlett Johansson.

7 Casey Jost's Acting Career

Aside from being a writer, producer and host, Casey Jost is also a trained actor. He has over 40 acting credits to his name including Impractical Jokers: The Movie, Staten Island Summer, Swipe Monster and Way Past Your Bedtime.

6 Writer And Producer

Aside from Impractical Jokers and SNL, Casey Jost has been involved behind the scenes on many projects. He has produced Fooling Around With Casey Jost and has been a write for Late Night With Jimmy Fallon, Billy on the Street, Characters Welcome and more. On some of these projects, he has worked with his brother and wife.

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5 Casey Jost's Music Career

A man of many talents, Casey Jost is also a musician. He can sing, play the guitar and play the piano. In the summer of 2021, he released an album called Measly. According to a description from himself, this is his fourth album and has been releasing music since 2017. Jost has also written many songs for TV shows and movies.

4 He Has A YouTube Channel

Casey Jost has his hands in everything! Whether its posting music videos, acoustic behind the scenes of songs, vlogs or Staten Island news, Jost covers many topics. He has a niche little community of over 1.8k followers. Jost has been running the channel for over 10 years and tries to keep it current, updating every few months or so.

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3 Casey Jost's Net Worth

Having worked in the entertainment business for years, Casey Jost has acquired a decent net worth. He hasn't starred in anything too big but has made a lot of his money from Impractical Jokers. As of 2020, it is estimated that Jost has a net worth of $1 million.

2 Why He Loves Comedy

In a 2015 interview with First Order Historians, Casey Jost told the publication what his favorite thing about comedy is, and it's not making people laugh. "My favorite thing about comedy is connecting with people. Whether it’s on stage with the audience, fellow improvisers, or in a writers’ room. It’s the best," he told them.

1 Casey Jost's Role On 'Impractical Jokers'

Jost is involved in a lot on Jokers. From hosting Inside Jokes to starring in the movie to making music remixes and producing the show, Dinner Party, Inside Jokes and Jokers Wild, he is a crucial part of the family and crew. Any big fan of the show should at least recognize his face. Like Joey Fatone, he has become like another unofficial part of the show, even though he is not always in front of the camera. Outside of the show, Casey Jost hangs out with the guys and has even attended their weddings and events over the years.

NEXT: Joe Gatto's Reason For Leaving 'Impractical Jokers,' Explained