In celebration of their 45th anniversary the Mr Men and Little Miss team asked a Bristol graffiti artist to design a new character.
'Mr Gaff' is the creation of graffiti artist Cheo and was inspired by the city's annual urban art festival Upfest.
The new addition to the Mr Men family will be sprayed live along with other Mr Men Little Miss characters to create a giant mural during the three day festival which takes place between Saturday the 23rd and Monday 25th of July.
Graffiti artist Cheo spoke to us about the process of designing a new character:
And of course we had to ask him which Mr Men character he's most like!
Clue... he says he's pretty clumsy....