Dr. Brain cast by popularity
15 cast members · 8 main · 1 season · 202115 cast members · 1 season
Lee Sun-kyun was the most popular cast member online on Nov 11.Lee Sun-kyun was the most popular cast member online on Nov 11.
#2,973 TV show on Nov 11 Attention Score0.0
Main cast
In at least half of the episodes
NameRankAttention Score
- Lee Sun-kyunas Koh Se-won · 6 of 6 episodes6 eps#9,2470.6
- Teo Yooas Secretary Yoon · 6 of 6 episodes6 eps#9,6810.6
- Seo Ji-hyeas Lieutenant Cho · 6 of 6 episodes6 eps#17,7490.2
- Park Hee-soonas Lee Kang-mu · 6 of 6 episodes6 eps#21,6620.2
- Lee You-youngas Jung Jae-yi · 6 of 6 episodes6 eps#27,9170.1
- Um Tae-gooas Lee Tae-goo · 3 of 6 episodes3 eps#38,0700.0
- Lee Jae-wonas Hong Nam-il · 6 of 6 episodes6 eps
- Cha Heeas Dr. Hahn · 6 of 6 episodes6 eps
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Guest stars
One or two episodes
NameRankAttention Score
- Jeon So-neeas Reporter · 1 of 6 episode1 ep#21,2510.2
- Kim Ju-hunas Jun-ki · 1 of 6 episode1 ep#25,8070.1
- Moon Sung-keunas Dr. Myung · 1 of 6 episode1 ep#33,0540.1
- Jo Bok-raeas Sergeant Park · 1 of 6 episode1 ep#39,4180.0
- Ahn Mi-naas Yoo-jin · 1 of 6 episode1 ep
- Park Ji-yeas Mi Na · 1 of 6 episode1 ep
- Kong Seong-haas Lim Jun-Ki's Wife · 1 of 6 episode1 ep
Cast questions
Who is the most popular Dr. Brain cast member right now?
Lee Sun-kyun is currently the most popular Dr. Brain cast member online, with an Attention Score of 0.6 and an overall rank of #9,247 as of November 11, 2026.
How many cast members does Dr. Brain have?
Dr. Brain has 15 credited cast members. 10 of them have an Attention Score on Television Stats today.
Which Dr. Brain cast member has the biggest career high?
Park Hee-soon has the biggest career high among the Dr. Brain cast, an Attention Score of 5.8 over their best 30 days.