Self-taught painter, draughtsman and print maker, Guerrero Medina tends towards neo-figuration that is expressionistic in tone. His output concentrates on landscapes and the human figure with the aim of transmitting mood by way of colour and the rejection of conventional form. His production of figures revealing the fragile interior world of his characters often verges on social criticism with the depiction of tragic episodes from history, such as the Republican exile to France, and the effect they have on the people involved. This type of work is produced alongside others of interest to the artist, such as the reinterpretation of old masters like Velázquez, and the treatment of landscape from a emotional, rather than realist, angle.