Wri/Art: Helpey, Loÿs (both pseudonyms of Loÿs Pétillot).
Super-scientist Radarius, Engineer Gilou, their two young assistants Alain and Bernard, and the athletic Big Bob fight the Martians and their human arch-enemy, the Spectre.
Radarius (Bob et Bobette Nos. 41-54, Dargaud, 1946-47)
Radarius Face aux Martiens (Radarius vs. the Martians) (Bob et Bobette No. 56, Dargaud, 1947)
Originally serialized in Bob et Bobette; never collected in the graphic novel format.