Those are the name of the three illustratores who send in an awesome piece each for the Bones & Tones show at Rotopol.

Clement BollaDesert Rock Kit
Clement Bolla works as a director, 3d expert and illustrator in London.

Ugo GattoniRolling Ston
Ugo Gattoni is an illustrator and art director from Paris.

Actually his name is Olivier Cramm and he works as an illustrator, art director and graphic designer in France.