Well, I'll upgrade Kiku now, since I've actually discussed my plans with him for her (Although Sick achieves will be important, as I'm kind of getting a metal arm.)

Kiku's upgrades!

[i]Upgrade[/i]-[b]Predatory Instinct[/b]
--[b]Hidden in Plain Sight (Rank 2)[/b]: A twofold mutation, this allows the ghost to retract and/or hide their features, generally with clothing. So long as clothing can fit, they can hide their true nature from regular humans until the time comes that they grow too powerful to hide their nature. The second half, which remains with them forever, is a greater chance to escape the sight of enemies engaging the Ghost, allowing them to engage from stealth, then retreat back into stealth once more. Enemies will have the tendency to fail to notice them, or fail to pursue in the correct direction. Some believe this to be subtle psychic emanations, others that the Ghost simply gained a lot of luck with this mutation. None can be certain. (Ability to hide true nature until a certain threshold is crossed, greater chance of escaping attention and going back into hiding, better at detecting the psychic emanations of other mutants.)

[i]Develop[/i]-[b]Thick Skinned[/b]:

[i]Custom[/i]
---[b]Razor Wings:[/b] One of the more radical mutations to be attempted in recent years, Kiku's new mutation was a result of her recent injury and subsequent extensive time under anesthesia. The wings are insectile and made of a strong-like substance membrane. They connect directly to Kiku's shoulder blades and are able to collapse and fold down to a manageable size when not in use: which also makes it possible to hide them. When un-collapsed, the new limbs stretch (from tip-to-tip) to a span of 15-feet. The top side, or Costa, of the wings are made of a dense, sharp carapace that slices through fabric and rope. The membrane of the wing itself is quite durable, although a bullet or a knife would be able to damage it extensively. (Gives Kiku insect-style wings with a 15-foot wingspan. These wings allow for short bursts of silent flight, although the action does fatigue Kiku very quickly) [Mutation Effect: She has wings, meaning that all clothing with a tight back becomes impossible to wear: including combat armour. Even normal clothing needs to have either an open back or slits, and be very loose.]

Sick Achieves
--[b]ARMed with Science![/b]: Having had her arm amputated to save what was left, Kiku now has a mechanical arm. It isn't much stronger than a regular human limb, but it'll do. (Mechanical arm has obvious advantages, do I really need to list them?)

--[b]Nightmare Fuel[/b]: Between her extreme disposition, mechanical arm, and morbid mutations, she can easily strike fear and terror into opponents she assaults. (Chance to cause enemies to panic and flee if charging them.)

---[b]State of Veritas[/b]: After surviving a near death experience, Kiku's mutations took a strange turn in twisting her nervous system, and more specifically, pain receptors. It quickly became apparent that Kiku gained the capacity to disable her pain receptors and continue on without fear of feeling pain, though she has no control over this effect: It can occur even when she is uninjured and out of harm's way. Strangely, she can also see 'ghosts'. Some are real people having had real conversations recently in that spot. Some are just hallucinations. Nobody is certain how this is even possible. (Hallucinations, random failures of the pain receptors.)

[b]In Forma, Quod Puritas[/b]: Having a closer connection to the mutants in the fog than any human could ever hope to have, these individuals have started to realize their true potential in the face of the oncoming force. They can now acutely hear and understand what the mutants in the shadow zone say to each other verbally or telepathically, and are immune to the horrible side effect of coming into direct contact with them: They cannot be either absorbed or burned. Situations which would petrify a normal person, such as the glare of a shadow wolf, have no effect on this mutant.

Wounds sustained are now rapidly healed, though this exhausts the mutant. For perspective: They can heal broken bones in minutes. This doesn't however render them immune to pain, which can still send them into shock, nor to blood loss, which can end their lives. Though notable their blood has taken on a somewhat lighter hue than that of a regular human, a more pinkish colour than red.