Tristan Stacy's files
Identity: Mass Master
File code: HMM
Alignment: Superhero
Affiliation: Power Pack
Private Identity: Unknown/Classified
Age: Classified (to proper clearance: Approximately age 12-14)
Hair color: Brown
Eye color: Blue
Ethnic Background: Caucasian
Base of Operations: Manhattan, some sources indicate Virginia
People of interest: Classified (to proper clearance: The remainder of Power Pack: Zero-Gee, Lightspeed, Energizer; relations to each other classified further for their own protection)
Usual Enemies: Anti-mutant groups, rumoured alien races, also a mob family that has harassed a children's book writer
Abilities: Control over personal body density, and density around him in the form of a bubble-like substance that allows him to shrink and expand. Over the years he has developed various ways to use this density control.
Weaknesses: Classified
Personal Assessment: I may be a superhero nut, but I don't like kids doing superheroics. Power Pack may have been doing some work for the past five years, but I'm glad that they are finally putting on masks. Before no one would give a second look to a bunch of kids, never mind mutant children, but as they grow older, more people will be likely to recognize them.
Of the four members of this team, everyone assumes this little guy will turn out either similarly to that arrogant womanizing prick Human Torch, or he'll turn out into the one of the team that turns into a supervillain. I think I disagree with this assessment. He may come across as the hothead of the team, but kids tend to take things a lot more personally than adults in general, because of their underdeveloped brains. I was actually worried the oldest one was going to turn into the villain instead.
According to some reports, Zero-Gee has actually gotten violent over the topic of drugs and substance abuse; in fact, he's the one that tends to lose his cool the most often. (See file HZG-005)
Mass Master on the other hand may mouth off, but I'm glad he outgrew some of his humour and obnoxious comments. I also think that out of the four, he's the one I've got to keep an eye on. He may be the one to go into superheroics professionally as an adult.
In regard to his abilities, he probably doesn't realize that even someone with a Masters in physics would have trouble figuring out his specific power set. I heard that they've swapped abilities twice in their history, but I'm pretty sure that the kids found his power set very complicated to figure out.
What depresses me is that when kids like him have to pick up the fight, it sends a powerful message, that even he doesn't realize that we law enforcers aren't doing our jobs. Also, a bit of a tightrope. Taking care of supervillains isn't exactly easy for normal police officers.