Ishmael appears in the nine-part 2000AD series A.H.A.B. (created by Nigel Kitching and Richard Elson).
Originally serialised in progs 1387-1395, the entire series was collected in the free graphics novel given away with Judge Dredd Megazine 333.
Earth 2086, and mankind is threatened with extinction by a virulent outbreak of Ebola. Humantities only hope lies with the enormous and mysterious creatures known as the Kohenyu, who exist in another dimension and only occasionaly cross over into realspace - it is thought the antidote can be cultured from chemicals extracted from the beasts' brains.
A science team, led by Ishmael, has been despatched on a desperate mission to find the cure - but a hunting expedition from twenty years ago is about to come back from the dead...enter A.H.A.B.