Hakase is a young scientist, who despite her outstanding intelligence, still reflects her age. Her true name is not yet known, as the word "Hakase" simply means "Professor", but her surname is known to be "Shinonome".

She loves sharks and snacks, and constantly modifies Nano Shinonome, whom she created, to add strange and unusual functions such as a roll cake dispensing arm. Nano, most of the time, is unaware of these modifications until they are first used. However, Hakase always refuses to remove the obvious wind-up key from Nano's back on the grounds that it is cute despite Nano's requests to do so.

She does not go to school (apparently because she has already graduated) and spends her days playing around in the house instead. Hakase's family is never revealed, it is unknown if she does not have family or simply does not live with them. Her home, labelled "Shinonome Laboratories" is inhabited only by herself, Nano, Sakamoto and her other sentient inventions.

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