Dionus

Dionus is the Prefect of Police in the Nemedian city of Numalia. He is subordinate to Chief Inquisitor Demetrio and was involved in the murder investigation of Kallian Publico at the museum known as Kallian Publico's Temple, with Conan as the main suspect.

After lengthy questioning, and after being sold out by his employer Aztrias Petanius (who hired him to steal a Zamorian diamond goblet from the museum), Conan finally had enough and attacked the police. In the chaos, one of Dionus' ears was severed by a partially blocked sword blow from Conan. When the clerk Promero was killed by a giant man-headed serpent that had been released from a sarcophagus (the same creature that killed Kallian), the police fled the museum in terror along with Dionus.