"Eagle" inspired several imitators, such as "Valiant", "Tiger", and "Lion" (which featured a Dan Dare clone, "Captain Condor") but such adventure tales were less palatable for girls. Female characters like Dan Dare's Professor Peabody (one of only two female main characters in the strip), were generally given less important roles than the men, and as a result a trend developed toward producing comics aimed specifically at either boys or girls. "Girl", a sister title to "Eagle", appeared in November 1951, and featured youthful capers in boarding schools, and tales of equestrian adventure. Later comics such as "Jackie", descended from contemporary women's magazines, were more cosmopolitan in flavour. "Girl" was followed in 1953 by "Robin", which was aimed at younger children, and in March 1954 by "Swift", for older readers.