 Well known for working with artist Hermann, Greg also worked with André Franquin, Eddy Paape (Luc Orient), Dany, Albert Uderzo and René Goscinny, and many others.It is estimated that he contributed as a writer and an artist to some 250 comic albums.Hergé asked him to remake two of "The Adventures of Tintin" – "The Seven Crystal Balls" and "Prisoners of the Sun" – into a script for one long animated movie, "Tintin and the Temple of the Sun".