Incredible Hulk (v2) #115
"Lo, the Leader Lives"
May 1969
The Leader helps Ross by trapping the Hulk in a living plastithene cage
reprinted in
*
Incredible Hulk Complete Collection
2007, in collection
(2007*)
*
Marvel Digital Comics
no date
(no date)
*
Marvel Super-Heroes #69
(reprint)
January 1978, in collection
(1/1978*)