After 12 seasons and 279 episodes between 2007 and 2019, The Big Bang Theory gained popularity from millions of fans across the globe. Many of these still consider it to be the best sitcom ever. Writing and producing such a long and successful sitcom required the whole cast and crew to be at the top of their game, which creator Chuck Lorre and his team were. The show had seven main characters, all of whom played a critical role into making the show the phenomenon it became.

For some, it is still difficult to picture these cast members in other shows or movies. But for the actors themselves, life had to move on. Since Big Bang aired its last episode in May 2019, they have all moved on to pursue careers outside this show.

RELATED: 'The Big Bang Theory Cast' Thinks This Star Was The Most Annoying To Work With

Here are nine of the main TBBT stars, and what they have been up to since the finale.

9 Melissa Rauch Is Still Into Comedy

Melissa Rauch has continued to grow her career, as she has been quite busy casting and producing other comedic movies and shows since Big Bang ended. After the end of the show, she landed a role in the romantic comedy series, Ode to Joy, where she was cast as the character Bethany. She also starred in The Laundromat as Melanie Martin.

Melissa also voices several films and shows, such as Cats & Dogs 3: Paws Unite!, Animaniacs, and Robot Chicken. In an upcoming role, she will star as Judge Abby Stone in the upcoming NBC series, Night Court.

8 Kevin Sussman Is Set To Feature In ABC's 'The Dropout'

Since playing the role of comic book store owner Stuart, Kevin Sussman has not had much to add to his profile. However, the good news is that this talented actor is set to make his big TV comeback.

This 51-year-old star will play the role of Mark Roessler in an upcoming miniseries, The Dropout, although its commencing date is yet to be announced.

7 Wil Wheaton Has More TV Shows And Movie Appearances

Star Trek star Wil Wheaton played a slightly fictionalized version of himself on Big Bang Theory. Since then, he has had numerous projects, including web shows and video games. He featured in Supergirl in 2019, as the end of the world protestor. In the thriller film Rent-A-Pal, Wil brings to life a character by the name Andy.

Between 2020 and 2021, Wil also hosted two different web shows, The Ready Room and Rival Speak for an outstanding tally of 38 episodes. Additionally, he has voiced American Dad as well as playing the role of John Juniper in the video game, I Expect You To Die 2.

6 Mayim Bialik Produces And Stars In 'Call Me Kat'

Mayim Bialik and Jim Parsons were reunited in the production of the Fox sitcom Call Me Kat. Since the last time they played the nerdy couple Sheldon Cooper and Amy Fowler on TBBT, this was the first project that the two have collaborated on.

Celebrity Show-Off, Match Game, and Jeopardy are other shows that Mayim has hosted or featured in. She is also currently writing a comedy film, As Sick As They Made Us, which she will also direct and produce. However, the release date is yet to be confirmed.

Related: Is 'Big Bang Theory' Star Mayim Bialik Really A Genius?

5 Simon Helberg Has Voiced Characters In 'Dug Days' And 'Young Sheldon'

Although Simon has generally lived a low-key life since the final season of The Big Bang Theory, his acting career is still ongoing, with some projects done and others yet to come. In 2021, Simon starred in Annette, a musical psychological drama film. He played the role of an accompanist.

He also played voice characters in Dug Days and in one episode of Young Sheldon. Simon is also set to work with Mayim Bialik in As Sick As They Made Us, where he portrays a character called Nathan.

4 Kunal Nayyar Took On Darker Roles

Kunal Nayyar's life and career have perhaps changed the most since the series finale of Big Bang Theory, with many fans exclaiming he is nearly unrecognizable. Since the series, Nayyar has taken on darker and more twisted roles, including that in Netflix's Criminal and Apple TV's Suspicion.

Despite his new roles, Kunal Nayyar has admitted that he'll "always be drawn to fantasy" and a dream role of his would be in Lord of the Rings.

RELATED: This Is Simon Helberg's Life After 'The Big Bang Theory'

3 Kaley Cuoco Is The Star And An Executive Producer On 'The Flight Attendant'

Kaley Cuoco continues to write success all over her name with great shows since her time on Big Bang. She stars as Cassie Bowden in The Flight Attendant and has been the voice of Harley Quinn in the DC Comics' adult animated superhero series.

She guest starred as a voice in one episode of Young Sheldon and has also been filming for roles in two upcoming films, Man From Toronto and Meet Cute. At the same time, Kaley is an executive producer on both Harley Quinn and The Flight Attendant.

2 Johnny Galecki Is Focusing On Fatherhood At The Moment

Of all the above actors and actresses, Johnny has the least TV appearances since Big Bang Theory. This could possibly be because he decided to take some time off the strict schedules of filming. Things have also not been easy for Johnny, as he separated from his girlfriend in 2020.

On his Instagram page, the actor continues to update his fans, with a myriad of posts of him being a loving dad to his son, Orbison.

1 Jim Parsons Is Still Acting But Is Also Now A Producer

As expected, Jim has been working round the clock with many movies and shows to star in and produce. Since the end of Big Bang Theory, Jim has been involved in numerous productions such as Boys In The Band, Extremely Wicked, Shockingly Evil and Vile and Young Sheldon, among others.

In an interview published on Variety magazine, the actor said, "Even if you’re a huge success in movies, you don’t get to check into the same parking space for 12 years." Since the end of Season 12, Jim has also been a producer on four television shows. He has also starred in the British comedy show, Staged, as well as voicing one episode of The Simpsons.

NEXT: 15 Lesser-Known Facts About Kunal Nayyar's Life After Big Bang Theory