<p>Kaitou Kid isn't really a rival character, he's somewhat of an antagonist.</p>
<p>Other than Heiji, there's only Sera Masumi who is a recurring character and a detective.<br />
She first appears in episode 646.</p>

CC BY-SA 4.0
2021-11-01T18:48:36.490Z
2021-11-01T18:48:36.490Z
Ocean
<p>I used to watch Detective Conan when I was younger and remember I got through the first 100 or so episodes. The most prominent "rivals" of Conan from what I remember was Kaitou Kid and Heiji Hattori. Who are some other characters that come later in the series and which episodes do they first appear?</p>

<detective-conan>
Debut Episodes of Rival Characters in Detective Conan (Case Closed)?
# Debut Episodes of Rival Characters in Detective Conan (Case Closed)?
Posted by: username_0 on 2014-12-11
I used to watch Detective Conan when I was younger and remember I got through the first 100 or so episodes. The most prominent "rivals" of Conan from what I remember was Kaitou Kid and Heiji Hattori. Who are some other characters that come later in the series and which episodes do they first appear?
**Tags:** detective-conan
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## 1 answers
### Answer by username_1 on 2021-11-01. Score: 1
Kaitou Kid isn't really a rival character, he's somewhat of an antagonist.

Other than Heiji, there's only Sera Masumi who is a recurring character and a detective.  
She first appears in episode 646.
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