Anyone collecting the GREEK series of the Mr Men childrens books by Roger Hargreaves?

I grew up with these books in Australia and recently started collecting them here in Greece for my daughter. My favourite is Mr.Grumpy, but there is a new one written by the author's son 'Mr Grumble'. I have Mr Grumble which in Greek is wrriten on the cover as "Kurios Grinyaris" as I thought Grinyaris was Grumpy, who does Mr Grumpy translate as then??|||Hi!! Oh that brings back so many memories! I used to LOVE those books when I was a kid, I grew up with them! =) Grinyaris is Mr. Grumble, like a Moaner basically, and out of knowledge I'd say Mr. Grumpy would be more of a moody word, like katsoufis or moutromenos, but it doesn't really sound right does it? Hehe...! Grumpiness is grinia though, so you have a point. Oh well, good luck finding it hope I helped! xx