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,
Marvel Comics was able to capitalize on its successful superhero comics of the previous decade by acquiring a new newsstand distributor and greatly expanding its comics line. Marvel pulled ahead of rival DC Comics in 1972, during a time when the price and format of the standard newsstand comic were in flux. Goodman increased the price and size of Marvel's November 1971 cover-dated comics from 15 cents for 36 pages total to 25 cents for 52 pages. DC followed suit, but Marvel the following month dropped its comics to 20 cents for 36 pages, offering a lower-priced product with a higher distributor