Sidelined No Longer
Big Man in Los Angeles
During his first battle with the radioactive villain Atom-Smasher (Ronald English), and was dosed in radiation (which gave Bill Foster some problems with his size changing....but more on that later..).
With Black Goliath #3 (June, 1976, also by Claremont and Tuska), Warhawk killed the Atom-Smasher at the behest of his employer....and Black Goliath faced off against the new villain of Vulcan...a super-strong, angry man, who broke into the Stark Industries facility to get an experimental device.
...to reappear in Black Goliath #5 (November, 1976 by Chris Claremont and Keith Pollard), wherein Black Goliath, Celia and Keith are found teleported to the alien planet of Kirgar, and face off with Mortag to get home! All this, and sadly, it was the end of Black Goliath's regular series....but not the end of Black Goliath!
Hanging With Teams
....(and a friendship between Bill and Benjamin J. Grimm started, which helped Bill out more than once later in his life!).
Still, what of the Stilt-Man and that missing item?
New Job, New Name
...and continued to appear here and there across the Marvel Universe (more as Bill Foster), but eventually returning as Giant-Man (where he faced off against Ant-Man foe, Dr. Nemesis in Marvel Comics Presents #113-118 in 1992).
Back to Basics
Sadly, Bill Foster should have stayed in retirement, as his return coincided with the Marvel series, Civil War, which put heroes against heroes, with some of them, like Goliath (who had sided with Captain America against Iron Man), not making it out of the series alive.
Still, we can only hope that some day, Bill Foster will return (he did, as shown in this cover with popular Avengers like Tigra, Moon Knight, Mockingbird, Vision, Scarlet Witch, Hawkeye, Mantis and Black Panther, from West Coast Avengers Annual #3 of 1988!) and that maybe Marvel would collect the original Black Goliath #1-5 (maybe along with the Ant-Man feature of Marvel Feature #4-10 of 1972?