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,
Guardians of the Galaxy (1969 team) #17. In #18, a third version of the Guardians' future was shown: this time led by Killraven against the Martians. Guardians of the Galaxy (1969 team) The original Guardians of the Galaxy are a superhero team appearing in American comic books published by Marvel Comics. The Guardians first appear in "Marvel Super-Heroes" #18 (Jan. 1969). Roy Thomas recounted, The team first appeared in the partial reprint title "Marvel Super-Heroes" with issue #18 (Jan. 1969), written by Arnold Drake and penciled by Gene Colan. Despite strong sales on this issue, the Guardians of the Galaxy would not appear again for over