Jack Power (Marvel Comics) Jack Power (Marvel Comics) Jack Power, currently known as Mass Master, formerly Counterweight and Destroyer, is a fictional character appearing in American comic books published by Marvel Comics. He first appeared in "Power Pack" No. 1 and was created by Louise Simonson and June Brigman. Jack was a founding member of the superhero team Power Pack. The second youngest of the four Power siblings, he was 8 1/2 years old when he was given his powers by Aelfyre Whitemane, a dying Kymellian noble. He continued to operate with Power Pack through their entire history. Jack Power was born in Richmond,
Goliath (Marvel Comics) Goliath (Marvel Comics) Goliath is a superhero comic book identity in Marvel Comics. The Goliath identity has been used by various superheroes. Henry "Hank" Pym was the first to adopt the Goliath name. Clinton "Clint" Barton is better known as the superhero Hawkeye; he used the Pym size-changing gas to adopt the Goliath powers and identity shortly after Hank Pym was Yellowjacket. He remained Goliath through the Kree-Skrull War, and briefly resumed using the identity during "". Dr. William "Bill" Foster was Pym's lab assistant, an African American who had an equally brief career as the Black Goliath and Giant-Man