Mr. Fussy is the twenty-first book in the Mr. Men series by Roger Hargreaves. Mr. Fussy is a perfectionist. He would not tolerate anything imperfect. Mr. Fussy keeps his hair combed, his moustache trimmed, his shoelaces tied and his house very neat. One evening, he is working when his cousin from Australia comes for a visit, Mr. Clumsy. Mr. Clumsy causes chaos and at the end of his stay, everything in the house is disastrous. However, things just get worse for Mr. Fussy as then a friend comes to visit, Mr. Bump.
The 2008 TV series of The Mr. Men Show, he is also very clean and will not tolerate anything dirty as well as being fussy about details. He retains his yellow nose and neatly combed hair but was given a black bow tie, reading glasses, brown shoes and a more neatly waxed mustache. He lives next door to Mr. Messy in a duplex-style house. He despairs (even crying) at the end of almost all of his scenes. He often gets kicked out or yelled at when he is using his temper on another Mr. Man or Little Miss (such as Mr. Messy, Mr. Rude and Little Miss Naughty) and he has terrible classes. In the US and UK Versions, he is voiced by Joseph J. Terry and Rob Rackstraw. In the first season of the show he was named Mr. Persnickety (Mr. Pernickety in UK version; both are another word for fussy) and was coloured light green. He was renamed back to Mr. Fussy in Season 2, retaining his look from the first season, albeit now appearing in his normal dark green colour. Mr. Fussy's catch phrases are , "Mr. Messy!" and "Sweet Henrietta!" ("Sweet apple strudel!" in the UK version, in line with his German Accent in that version). On the website he says, "How revolting.". Mr. Fussy can play the Piano (both his concerts were ruined by Little Miss Chatterbox), the Viola, and the Harp.