Written by Superman co-creator Jerry Siegel, it tells the adventures of a pair of American crime-fighting technical geniuses - Gadgetman and his younger sidekick Gimmick Kid - as they battle a variety of outlandish villains.

[6] Art for the weekly strip was provided by Carlos Pino and Vicente Alcazar (who at the time worked jointly under the pseudonym Carvic), who were among the large number of Spanish artists used by Fleetway and its predecessor Amalgamated Press.

Among the pair's previous British work were issues of War Picture Library and City Magazines' licensed Star Trek strip in TV Century 21.

[9] In line with then-current Fleetway policy - which assigned no ownership or royalties, instead offering sizeable page rates under a work-for-hire model - neither Siegel nor the artists were credited in Lion.

He is aided by another brilliant mind, young Travis Corporation scientist Gary Stewart after the youngster helps foil a raid on a laboratory by the Madmen Mob.

Against them are the joker known as the Trickster, his huge robot the Taunting Titan and his cranially-enhanced army of Brain-Men; King Zombie; the Mad Mummy; alien invader Zeroc;[16] and Gimmick-Kid's idiot cousin Ramsey Chillingswaithe, who briefly attempted an unsuccessful superhero career as Zoom-Boy before rebranding as villain Doom-Boy and recruiting female sidekick Doom-Girl as part of a convoluted plan to infiltrate The Terror League.