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,
Fantastic Five his mind sent to the Crossroads of Infinity. Reed's teammates use the opportunity to escape, and with Kristoff's help, shut down the cosmically powered Doombots. Reed and Doom are shown to be evenly matched in their duel, and both minds are sent to the crossroads as a result, leaving their bodies blank and motionless. Sue and Kristoff decide to remain in Latveria and look after Reed, while Alyce goes home with her mother. Ben's son Jacob takes Reed's place in the F5. Fantastic Five Fantastic Five is a fictional superhero team appearing in American comic books published by Marvel Comics.