Robert Solanović began his career as an inker for the comic 'Svebor i Plamena 'by Darko Macan and Goran Sudžuka. His first professional assignment was on the strip 'Sašin dnevnik', that was written by Darko Macan. The children's magazine Prvi izbor began publishing Solanovic's original work in 1999, including the comic 'Mister Mačak'. His comics simultaneously appeared in Modra Lasta magazine, while he also worked as inker for comics created by Edvin Biuković and Goran Sudžuka for the US publishing house DC Comics. Since 2003 his works have been regularly published in the Croatian comic magazine Q, for which he creates the series 'Slatka' (under the pseudonym Leo Müller) and 'Kljunovi' (under the pseudonym Alf & Hitch), both in cooperation with scriptwriter Darko Macan.