General Jumbo debuted in Beano No. 583, on 19th September 1953, and appears frequently in Beano Annuals. This strip comes from December 26th 1964, when Jumbo saves Father Christmas himself!
This strip from 1964 has some fantastical moments - fighting a polar bear on a skyscraper, saving the children's hospital, and rescuing Father Christmas. Only the title has colour to it, as Beano wouldn't splash out on full colour pages for several decades!