Raúl Martínez was a well rounded designer, as he was successful in just about every artistic form he pursued: from the early abstract paintings, to the later representative ones; from photography to collage; from screen printing movie posters to freelance graphic design for government institutions such as the ICAIC.
The artist's more notable entrance into painting was in 1956, when he started his abstract-expressionist work, leaving the group Los Once to pursue more representational work, at which point he left behind any traces of the "stereotypical" aforementioned.