Born in Barcelona, Alberto Marcet Aparicio began his career in 1955, drawing 'Balilla, Ricardo y Pirracas' for Editorial Mercurio de Logroño. In 1957, he began working for Editorial Valenciana, contributing to the collection Comandos. Later on, he also drew for Jaimito magazine and other collections of the publishing house. In 1960, he assisted Manuel Gago on 'El Guerrero del Antifaz', 'Piel de Lobo' and 'El Aguilucho'.
In 1962, Marcet set up the collections 'Titán el Magnifico' and 'Un Médico en África', again for Valenciana. He also illustrated several books of 'Roberto Alcázar y Pedrin'. Between 1963 and 1965, he illustrated classic novels for Ediciones Gaisa. In the early 1970s, he drew adventure comics for SOS. He made 'Tarzan' comics for the Portuguese publisher Portugal Press in 1977. A year later, he created the character 'Anceo' for the Milanese publisher Polem.
Marcet additionally worked for the French market (Imperia's 'Kalar') and Ediciones Sauce ('La Biblia'). In the 1980s, he worked with Manuel Gago again and created the character 'Gumi y su Lobo Rama for Balerares magazine. In 1984, he illustrated episodes of 'The Phantom' for the German Bastei Verlag, in cooperation with his son, Manuel Ángel Marcet.