"Jeopardy" featured a child actor as a contestant Tuesday night.

Paris Themmen played Mike Teevee in "Willy Wonka and the Chocolate Factory."

Neither host Alex Trebek, nor Themmen mentioned his past.

But fans picked up on it.

"Jeopardy" contestants come from a wide range of backgrounds, and one recent contestant had a famous past.

On Tuesday's episode of the hit quiz show, a guy named Paris Themmen tried his hand at answering the general knowledge questions. Host Alex Trebek introduced Themmen, 58, as an "entrepreneur" and "avid backpacker," but neither mentioned that Themmen was once a child star.

Themmen made his movie debut as Mike Teevee in 1971's "Willy Wonka and the Chocolate Factory." Teevee, of course, was a child obsessed with watching TV.

Though Themmen hasn't done much acting since, fans watching "Jeopardy" recognized him for his iconic role.

"Is nobody realizing that Paris on Jeopardy right now, is Mike TV from Willy Wonka and the Chocolate Factory?.... Like legit it's the actor," said one user.

Is nobody realizing that Paris on Jeopardy right now, is Mike TV from Willy Wonka and the Chocolate Factory?.... Like legit it’s the actor. — Rachel Michele (@rachelmichele25) March 13, 2018

"I was making dinner in the kitchen, listening to Jeopardy when Alex Trebek started introducing contestants at the break. He said @ ParisThemmen and I ran out saying MIKE TEEVEE !!!" wrote another.

I was making dinner in the kitchen, listening to Jeopardy when Alex Trebek started introducing contestants at the break. He said @ParisThemmen and I ran out saying MIKE TEEVEE !!! My wife thought I was nuts. Great job Paris! — Wildbill (@wildbill77) March 13, 2018

Fans loved it.

OMG MIKE TEEVEE WAS ON #JEOPARDY LAST NIGHT. — Holy Crap. Lions! Tours (@BigBrain61) March 15, 2018

Mike Teevee is on #jeopardy. Is this real life??? pic.twitter.com/6GLpbGEO1D — Jamie (@jpnoz) March 13, 2018

Themmen ended up in second place with $6,800.

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