Well Gustav's nickname is "Numpty" I think it's an english thing! A numpty is a person with no common sense!
Katelina's nickname is "Ittle Bittle" Cos she's a little tiny cat!
Tolstoy's Nickname is "Tolly Lolly Pop" (Cringe worthy hey!)
Lananas Nickname is "Lala"
And Cavan's Nickname is Cavie! But his real pedigree name is St Augustine of Ireland!