Eustaquio Segrelles del Pilar (born 14 January 1936; Albaida, Valencia, Spain)
Eustaquio Segrelles is a Spanish (watercolor) painter and comic artist. He began his career in Valencia as an assistant to Eduardo Vaño in doing Roberto Alcázar. It was for the publishing house Maga where he created his best known comic, Los Imbatibos (1963). He also made episodes of other series, including Aquiles, La Cuadrilla and Johnny Pacífico. For the collection Joyas Literarias Juveniles he made a comic adaptation of Nuevas Aventuras de Dick Turpin in 1973. He is a cousin of comic artist Vicente Segrelles.