Dalek designer Raymond Cusick may have sketched the Dr Who baddies after seeing a Gloucester school chimney.
Mr Cusick died last week, and it's passed in to High School for Girls folklore that he designed the robot with the chimney of the 104-year-old Denmark Road building in mind.
"Apparently whoever wrote Dr Who saw it on top of the school," said a school spokeswoman.
"They were staying in Gloucester, I believe."
She said most of the pupils and staff know of the story.
"I don't know if there is any truth in it but a couple of residents told me about it when I was knocking on doors in my ward a couple of years ago," said city councillor Seb Field (LD, Kingsholm and Wotton).
It emerged in 2008 that Mr Cusick took his cue from a pepper pot but the Denmark Road "Dalek" which is an original feature of the building certainly bears an uncanny resemblance.