Baikinman's female partner in crime. She is selfish, demanding, childish, and greedy, but sometimes shows kindness, as demonstrated by her crush on Shokupanman. Her Japanese name is a combination of "Doki", the Japanese onomatopoeia for a quickly beating heart, "baikin" (meaning "germ", also the case for Baikinman), and the diminutive/affectionate suffix "-chan". She first appeared in episode 13a. In the English TMS Entertainment website, she was called Spark.