Mass Master

Jack Power
Prime Marvel Universe
(Earth-616)

Alternate Reality Versions

Age of Apocalypse (Earth-295)	Jack Power MC2 (Earth-982)	Earth-Z (Zombiverse) (Earth-2149)	Marvel Age Power Pack (Earth-5631)
Duke of Density (Hammy Bower) Home to Cookies & Milk (Earth-9047)	Earth X (Earth-9997)	Jack Power Power Pack MAX (Earth-16161)	Renew Your Vows (Earth-18119)
The Pack (Earth-22455)	Power Pack are the only heroes remained to fight Kang (Earth-68326)	A-Babies vs. X-Babies (Earth-71912)	Avengers lost Evolutionary War (Earth-89721)
Ultravision's Utopia (Earth-90110)	Mini-Marvels (Earth-99062)	Mass Master is Earth's greatest hero (Earth-TRN420)	Fist released virus onto Times Square (Earth-TRN590)
Deadpool Kills the Marvel Universe Again (Earth-TRN664)	Jack Power Current Reality is Unknown (Unknown Reality)	Jack Power Current Reality is Unknown (Unknown Reality)