Giulio De Vita studied Visual Advertising and Modern Art and Cinema. He began a longtime collaboration with Emanuele Barison, as an inker. He worked extensively in the advertising field. He illustrated some episodes of 'Lazarus Ledd' in 1992. He expanded his activities and worked as a videomaker and storyboard artists. He also illustrated several covers for Marvel Italia. He returned to comics in 1998, illustrating 'Les Ombres de la Lagune' with text by François Corteggiani at the French publishing house Soleil in 1998.
Several advertising comics followed, including the series 'Magic Geox' with Emanuele Barison. In 2001 De Vita drew 'La Fatwa', the second issue of Frank Giroud's project, 'Le Décalogue'. At the same time, he continued to work in animation, cinema and videoclips. He returned to the French market with 'James Healer', which appeared with text by Yves Swolfs at Lombard from 2002.
In 2004, he developed the science fiction series 'Kylion' together with Francesco Artibani for Buena Vista Internatinal Comics (the Italian Disney production). De Vita created the characters, the design, as well as some episodes. In 2006 he began a collaboration with Sébastien Latour to create the series 'Wisher' for Le Lombard. In 2010 he drew the first book in the series 'Le Monde de Thorgal', written by Yves Sente.
Le Monde de Thorgal