One-Eyed Jack was a comic strip that appeared in the British anthology Valiant from December 1975 to October 1976, and then later in Battle Picture Weekly.

In his introduction to the 2017 trade paperback collection, he wrote: "The impact of the story was in huge measure boosted by the slick, superb artwork of John Cooper...

The lead character was Detective Jack McBane, who lost his left eye when he was shot by a robber in the first episode.

[1] After ten months, Valiant was merged into Battle on 23 October 1976, and Wagner's involvement with the strip ended.

In a 1995 interview he said: "When Pat [Mills] was putting together 2000 AD, we realised from the success of "One-Eyed Jack" this was the kind of story the paper should have – a really hard, tough cop".