'Stranger Things' star Joseph Quinn says he felt like a 'sociopath' faking his American accent and had to ask Joe Keery for help

• Joseph Quinn plays Eddie Munson in the fourth season of Netflix's "Stranger Things."
• The British actor was playing a teenager from Indiana, and so had to perfect an American accent.

"Stranger Things" breakout star Joseph Quinn had skyrocketed to fame for his performance as Eddie Munson, the metalhead with a heart of gold who joined the cast of characters for season four. But the British actor said that doing an American accent during filming made him spiral a little bit.

"You feel like a sociopath," the actor said on an episode of the "Off Menu" podcast with Ed Gamble and James Acaster (two comedians from the UK). Acaster had complimented Quinn on his American accent in the show, which prompted the actor to talk about how strange it can feel to be in character.

"After awhile I was so far down the rabbit hole, at points I'd be like 'Do I sound good? Do you like this? Do you like what I'm doing?'" Quinn said with increasing panic in his voice.

Quinn also said he spoke with his costar Joe Keery, who plays Steve Harrington, about his worries.

"I was talking to Joe Keery and at one point I was so deep in it, and he was like 'Dude, I can't save you, but I promise you it's gonna be fine,'" Quinn said.

Quinn is one a few British actors who star on "Stranger Things." Millie Bobby Brown (who plays Eleven) and Charlie Heaton (who plays Jonathan Byers) are also from the UK.

Since the Netflix series takes place in the state of Indiana, the actors from across the pond have adopted American accents for each of their characters.

Quinn appeared as the first guest for season eight of the "Off Menu" podcast, in which Gamble and Acaster invite celebrities to choose a starter, main course, side dish, drink and dessert from their fictional "dream restuarant." Quinn's menu selection included oysters, steak tatare, a "big buttery fish," and "filthy" martinis.

During the episode, Quinn also spoke with Gamble and Acaster about American mannerisms that surprised him, like how much people in US seem to care about drinking water.

You can listen to the full episode here. For more on "Stranger Things," read 19 behind-the-scenes secrets you probably didn't know about season four here.