In contrast, Fantastic (and later Terrific as well) were more American in appearance, resembling the black-and-white comic anthologies of the time such as Creepy and Eerie.

Fantastic could not sustain a profit in the increasingly crowded market of 1960s comics, but it did gain a faithful following, and served as an introduction for UK readers to many of Marvel's superhero characters.

Fantastic had a different format from its three predecessors, being slightly smaller in size and on better paper; it featured 40 pages and a higher cover price (9d, compared to Smash!

Fantastic's first 15 issues also featured original stories of a British superhero known as The Missing Link, a prehistoric character closely based on the appearance of the Incredible Hulk (risking a lawsuit by Marvel for copyright infringement) — Hulk reprints having been the first Marvel superhero strips to show up in Odhams' Power Comics titles, and remaining hugely successful in Smash!).

Many of these were reprinted from American Marvel comics, but at least some (including a Johnny Future pin-up) were produced by a young Barry Windsor-Smith.

The Marvel material in the Power Comics titles were frequently edited to replace American spellings and slang with their British equivalents.

Marvel credit boxes containing the names of Stan Lee, Steve Ditko, Jack Kirby, and the like were invariably deleted from the splash pages; the space they occupied was either left blank or covered with drawn-in artwork.

Apart from the compulsory copyright acknowledgment in small print, the name "Marvel" was never mentioned — wherever it appeared in the strips it was changed to "Power".