All six cast members on 'Problematic Man' are known to be intelligent and have 'hot brains'. But which of them are actual geniuses?

On a recent episode, the six cast members, Jun Hyun Moo, Ha Suk Jin, Kim Ji Suk, Lee Jang Won, Tyler Rasch and Rap Monster all took the IQ test for the first time after reaching adulthood.

Lee Jang Won, who tested to have an IQ of 150 when he was a student, said, "I received 150 before I started to drink alcohol, so this time, the only place to go is down."

We all knew they were smart, but we didn't know they were this smart! Cast members Ha Suk Jin, Jun Hyun Moo, and Lee Jang Won�were tested to have an IQ in the top 1% in Korea! Some of them even had higher IQs than when they were in school.

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