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,
Power Comics integrate elements of American superhero comics into mainstream British comic publishing, motivated by the huge success of Stan Lee's line of Marvel Comics in the USA. Besides reprinting many of Marvel's most popular series such as Spider-Man and the X-Men, there was also an attempt to create a home-grown British superhero: firstly with Johnny Future, who appeared in "Fantastic" prior to its merger with "Terrific"; and subsequently with 'Tri-Man', who appeared in "Smash" after its merger with "Fantastic". As well as drawing heavily on Stan Lee's creative output, Power Comics also attempted to emulate Lee's chatty style and community building