Marvel gave Jack a miniseries in 1984, and it was being created at the time this issue came out. I’m pretty sure that’s why he got a guest shot on MTU. I don’t think I’m going to cover the JoH mini because I can’t find it anywhere.
All this story really does is re-establish the character, expositing that his powers are killing him and his girlfriend Marcy is trying to find a cure, which will be the plot of his limited series.
Creators: Bill Mantlo and Ron Frenz