Kaken Musume

Kaken Masume is a scientist and part of the Miami City Police, but doesn't usually go on missions. She does come with Yao and Lu in episodes like "The Sea! Bikinis! Ghosts!" and "Princess Nokemono". Her clothes features a dart gun in her bow tie, helpful for subduing distraught bystanders... or when used by Yao, to knock out the chief so that she could do her grandstanding.

(Source: Wikipedia)