Dagnino's artistic career started out during his last years of university (master's degree in English Studies) and led him into three main fields: graphic design, illustration and comic books.
[citation needed] He worked for The Walt Disney Company's Imagineers in the design of an attraction permanently exhibited in Florida.
[citation needed] That same year he published his first children's book (Kasandra y la Rebelión de los niños) which will be part of a series in the future.
[3] As part of DC Comics' company-wide 2011 title relaunch, The New 52, Dagnino was made the artist on Resurrection Man.
[4] He subsequently took over art duties on Suicide Squad, beginning with issue #9, replacing Jesus Saiz, who moved to Resurrection Man.