Named Dr First, Dr Second and so on, the characters and their stories have been created by Adam Hargreaves, who took up his father’s role after he passed away in 1988.

The idea was prompted by a wealth of unofficial Mr Men mash-ups created by fans and posted online.

“We wanted to give something back to these supporters so we’ve created the first official Hargreaves mash-up,” said Sanrio licensing director Alastair McHarrie. “Who better to partner with than another classic British property, Doctor Who. We couldn’t be more excited.”