I have reviewed Samuel and Gray.
Samuel is in, he's a background character and really doesn't need review.

[b]HOWEVER!!![/b]

Grey needed a VERY thorough review. 

[hider=This is Everything up to Bide]
[list]
[*]You're going to have to explain EVERYTHING that this 'makeshift physiology' thing does. Preferably in list format.[/*]
[*]This is combat based roleplay, being able to turn invisible is OP. Period. Rejecting it on grounds of possibly unavoidable attacks. Stating that it can be heard does not make it avoidable unless your perception of the area around you is within a small group of characters.[/*]
[*]Disease immunity is totally fine, everyone has it.[/*]
[*]Disease quarantine, however, is unacceptable. On contact transfer of diseases and the like that you can store up inside of you. This could be a power that you store up from a dozen fights previous, and it would be instantaneous and overpowered. I cannot in good faith accept that.[/*]
[*]With your physical durability you need to list your strength (In lifting weight.) and speed. (In MPH.) I do not see it listed anywhere on this.[/*]
[/list]
[/hider]
[hider=This is Everything under Bide]
[list]
[*]Before getting into this, I have to say, every single thing here would have to be limited severely before being accepted.[/*]
[*]Bide: Starting at the top. This ability allow you to duplicate, reciprocate, and dissipate any kind of damage.You did not mention any time limit on the energy he stores. As well as the little note of: Every movement you make has an equal amount of resistance. Passively building up force as you travel, so you could simply state; "Without fighting for a year, he has built up great amounts of energy by simply moving."[/*]
[*]Momentum Transfer: This is an infinite buildup of energy, meaning that he can simply pump his arms a few dozen times and make one punch equal a few dozen punches worth of force.[/*]
[*]Replication: This clearly states that anything that he absorbs is permanent. As noted by the words: "Takes practice." That implies an extended time that he is allowed to keep the powers he absorbs.[/*]
[*]Rejuvinate: While this isn't against the rules, it just doesn't make sense. So far, this is the only acceptable thing on this list.[/*]
[*]Anti-Friction: The current land speed record is 760.343 mph. This is with a jet powered car, and technically classed as the fastest car in the world. Along with the long list of things wrong with this sheet, he can also slide at faster than the speed of sound with ease. [/*]
[*]Momentum Redirection: And here is where you become invulnerable. Able to infinitely gather up force with a previously listed ability, combined with this ability to redirect and completely avoid injury. These two combined with enough time equals a punch that could carry more force than the Tsar Bomb.[/*]
[*]Multiplicity: No. Full stop.[/*]
[/list]
[/hider]
[hider=Equipment]
[list]
[*]The Ambidex: This multiplies the already potential for infinite energy storage. No.[/*]
[*]Ivalenzer: A quarter kilometer long blade, with a poison that is uncurable by anyone who doesn't have a needle. No.[/*]
[/list]
[/hider]

I'll review the other two over tonight.