THE Chase's Darragh Ennis has been a huge hit since joining the quiz show, but he hasn't always worked as a big TV personality.
The Irishman who has been dubbed 'The Menace' by The Chase host Bradley Walsh, unsurprisingly has a brainy work history.
Outside of being a quizzer and the new Chaser, he is also a postdoctoral researcher at Oxford University - specialising in the study of the brains of insects.
Darragh previously worked at Concordia University in Canada and Ireland's Maynooth University.
His Twitter bio says "I do science and occasionally quizzes. Chaser on ITVs The Chase. Send me terrible jokes."
The Chasers are sometimes more known for their nicknames than their own names - with Mark Labbett being famously called the Beast.
With The Governess Anne Hegerty and The Dark Destroyer Shaun Wallace, the monikers have become a regular theme on the hit game show.
And Darragh Ennis is no different, as the new Chaser already has two nicknames in The Dublin Dynamo and D. Ennis the Menace - in a nod to his own name.
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It is a rarity, but contestants on The Chase have returned to become the Chasers.
Darragh took part in the show in 2017, performing well in the cash builder round to put £9,000 on the table.
After a dazzling entrance, the nerves seemed to get to the Dublin Dynamo as the contestants enjoyed success in the opening rounds.
Host Bradley even remarked: "Are you enjoying it - even though you're taking a thrashing?"
Despite Chaser Paul Sinha's attempts to persuade him to go higher or lower, Darragh eased through and banked that amount for his team.
But his teammates all took lower offers - including two minus ones - to get through to the Final Chase.
Darragh contributed 14 correct answers to leave Sinha with the insurmountable challenge of topping their 23 steps - yet they took just £1,575 each home.
Now, Darragh becomes the sixth ex-contestant to take the hot seat - the first in the UK.
In March, it was revealed that the newbie could face the wrath of bosses after he provided insider info to prospective players on how to win the jackpot.
The brainiac pocketed £22.50 in exchange for tips that could cost the ITV quiz show thousands.