Original 'Little House' villain returns for reboot with warning for new Nellie

Alison Arngrim is back on the prairie. The actress who made Nellie Oleson one of television's most unforgettable villains returns with a surprise cameo in Netflix's new "Little House on the Prairie" reboot, now streaming.Although she hasn't met Willa Dunn, the child actress taking over the iconic role, Arngrim already has some hard-earned advice on how to perfect the art of playing the girl everyone loves to hate.'LITTLE HOUSE ON THE PRAIRIE' RETURNS AS NEW NETFLIX ADAPTATION AIMS FOR WHOLESOME ENTERTAINMENTAlison Arngrim played the unforgettable Nellie Oleson on NBC's "Little House on the Prairie" for all nine seasons, from 1974 to 1983, becoming one of television's most iconic young villains.(Getty Images)"You've got to have a solid sense of who you are," the actress told Fox News Digital.

"It's a tall order for someone who's like 10, 11 or 12 years old, but when people are talking about this other person who lived in the 1800s, saying, 'I hate her so much.She's so awful.

I can't stand her.I want to slap her in the face,' you can't take that personally."The original "Little House on the Prairie" series has cultivated a devoted following, affectionately known as "Bonnetheads." (Eric Fougere/Corbis via Getty Images)"You cannot think it's real — that people want to slap you in the face or that you did something wrong.

It's actually a compliment.It means you're doing it right."Actress Alison Arngrim poses during a photocall for the series "Little House on the Prairie" at the 63rd Monte-Carlo Television Festival in Monaco on June 15, 2024.

(Valery Hache/AFP)"Remember, Sir Anthony Hopkins didn't lose sleep over being Hannibal Lecter," she said."You are who you are, and this is just a character.

You have to understand the job is to irritate, annoy and upset people.And if you do it correctly with a character like Nellie, people are going to be annoyed.

But when someone says, 'I can't stand her,' you can't possibly take that in."WATCH: NETFLIX'S ‘LITTLE HOUSE ON...