A bumbling, but sexy policewoman, Yukika was initially suspicious of the Nerima Daikon Brothers after a series of suspicious building collapses that were the results of the Brothers schemes came to her attention. She disguises herself as "Deb Sukerno" a.k.a. "Lady Deb" (a parody of Japanese socialite Dewi Sukarno.) She eventually becomes an admirer of the group, especially Pandaikon and Ichiro. She uses mechanical gadgets similar to those of Inspector Gadget. She also keeps two mechanical pets Karakuri 1 and Karakuri 2. The Japanese public often refers to her as "Lady Dewi," another reference to Dewi Sukarno.