Incredible Video Shows Nancy Cartwright Doing All Her Simpsons Characters In Under 40 Seconds

It turns out that many fans aren't actually aware of how many characters Cartwright voices, but a resurfaced video is about to blow some minds.

Take a look below:

The remarkable video was first uploaded in 2017 on the actor's YouTube channel but has since been doing the rounds again online... and it's pretty phenomenal, we must say.

Cartwright begins by voicing Bart – the pre-teen tearaway she's become the most famous for. She then swiftly moves onto Nelson, recreating his iconic "Ha Ha!"

It's then revealed the actor is responsible for voicing the classroom geek Data Base, as well as angelic neighbour Ned Flanders' son, Todd Flanders. School bully Kearney Zzyzwicz is up next, before Cartwright does the perfect rendition of a The Simpsons fan favourite – innocent Ralph Wiggum.

The actor wraps up the video by revealing she also voices none other than Maggie Simpson, the baby of the family who has held the inability to age over the past 33 years since the show first aired in 1989.

Since the video went viral again, fans from far and wide have been flocking to the comments to share their admiration of Cartwright's sheer talent, with one saying: "That's talent. She's not just changing her voice, that wouldn't fly. She's changing her persona everytime too."

Another fan said: "I was so surprised learning these characters were voiced by a female, SHE IS SO FREAKING GOOD AT HER JOB."

"She's not even a dude nor the age range of these characters. That's talent right there," someone else pointed out.

She also shares inside secrets and thoughts on what it's like working on one of the longest-running TV shows of all time, and she revealed what it was like in the early days of The Simpsons.

"If we go back in time, wind the clock back... I think, what was I thinking at the time I was hired and the show got picked up for that first season?" she said in one video.

"And I gotta tell ya, nobody had any clue [laughs]. Not only that, 30-plus years later we'd still be on the air, but also... we were finding our own, learning how to record in a booth that wasn't meant for recording in.

"I was way pregnant, we were sharing one microphone, it was taking two hours to record 30 seconds.

"But we just did it, because it was fun! And who knew? There wasn't anything like it on television, there was no other primetime show that was animated. I didn't have the perspective to think what could happen in the future... all I can say to that is thank you."