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,
Spirit of '76 (Marvel Comics) Spirit of '76 (Marvel Comics) The Spirit of '76 (real name William Naslund) is a fictional character appearing in American comic books published by Marvel Comics. Created by writer Roy Thomas and artist Frank Robbins as part of a World War II-era superhero team, the Crusaders, and patterned on the DC Comics group the Freedom Fighters, the character first appeared in "The Invaders" #14 (March 1977). The Spirit of '76 was the equivalent of Freedom Fighters member Uncle Sam, originally a Quality Comics character. In the stories, the character briefly assumed the role of Captain America after the original –