Supernatural Agility
In canon, Trowa is already capable of ridiculous feats of agility and acrobatic skill. Leaping some fifteen-twenty feet in the air from a moving motorcycle to land with perfect balance atop a clothesline and tightrope-walk away, pulling off crazy flips with multiple somersaults and spins down from a height before landing with his gun drawn and still being faster than someone who's just kneeling there drawing their gun, jumping into the air and landing to ride balanced atop the back of a running lion while doing a one-hand-stand, etc.
Here, his amazing talents are augmented even further by the Porter. If there is anything you think is just too ridiculous for anyone to pull off, he can do it. Contort himself to fit into a small plastic box? Balance on the tip-toe of one boot atop a pencil held in place in cement? Make a monkey jealous and cats look like they only learned how to walk yesterday morning? Yes--Trowa can do it, and without breaking a sweat.
This is a passive power, always being on; it is also harder to detect than his main powerset as he was, as stated, already naturally bizarrely graceful. It only becomes obvious when he does the really crazy stunts.
Leonine Shapeshifting
FUNCTION DETAILS
Trowa has spent his entirely life wearing metaphorical (and sometimes literal) masks and/or borrowing the identities of other people. He's also very close to animals and is occasionally likened to a wild beast--fiercely protective and extremely dangerous, but surprisingly soft-hearted towards those who show it a kindness.
As such, by briefly focusing his thoughts, Trowa can slide from his natural human body into four other bodies running the scale from human to lion (however, he only knows of three, as one shape has not been discovered yet ICly). The transformation is near-instantaneous; a few seconds at the most when he's at his tiredest--however, it isn't a POOF! LION! sort of deal. Were someone to get a fast enough camera and slow down the footage a great deal later, they would be able to see the body moving through the necessary bodily changes. It just happens to go extremely quick now that he's spent nearly two years being used to it.
Any scars or wounds that he has on his body as a human will transfer to his other shapes as well--if he gets his left arm torn open in battle and shifts to lion form, his left front leg will have the same gash. Any non-temporary markings on his skin at the time (tattoos, were he to have them, or say permanent marker) would also transfer into patterns on the fur.
Clothes, jewelry, and anything else 'worn' on the body will potentially absorb into him and become part of the living tissue in some fashion. Actual clothing simply melds into the body, and so if he happened to be soaked to the elbows in blood as the were-lion, his turtleneck will be as well when he returns to human form; jewelry, piercings, and the like are absorbed and leave markings of a kind to show where they were. A blade fixed to the end of his tail as a were-lion will become a silver blotch just at the base of his spine when human. Were he to put his mobile suit Heavyarms P on as a human and shift to lion mode, the fur would pick up some matching oddly-colored tipping in the right lighting.
Objects that he must carry, such as a gun or a bag or a chair, do not become part of his body. He must continue to hold onto them in whatever fashion he chooses while he moves through the form.
Trowa's DNA has been re-written to some degree. Were it possible to examine it, one would find several changes, the most important of which is a load of 'junk coding' in it that seemingly has no purpose whatsoever. When he shifts to another form, however, this base 'junk coding' begins to expand upon itself, overtaking the spaces left behind as his normal strands begin to collapse and leave holes, with the furthest he is able to go being completely rewritten as a lion; the process reverses as he slides closer to human again. The Porter is the sole reason he is capable of using this power; essentially, its powers over their reality force his body through an impossibly fast series of reboots based on the new genetic coding. Without the support of the machine keeping his body stabilized, he would burn up in an instant while attempting to use it; were it to be completely destroyed, Trowa would find himself unable to change at all.
These things only apply to things that are presently part of Trowa's physical body, however; anything that leaves him is considered removed from the containment field and is unable to sustain itself and any changes it has undergone. Everything that leaves his living body while in one of his unnatural forms--a hair, a drop of blood, skin cells, a tooth--is consumed in the attempt to revert to normal without the assistance of the Porter and disintegrates in an instant, leaving no traces.
Anything that comes away from him while he is human will remain intact. However, because it is too full of bad genetic coding, and is not contained by the Porter, it will attempt to revert back to base. Unfortunately, because Trowa Barton's true canon pattern does not exist here, it has nothing real to go back to and attempts to make something out of what doesn't exist. Because of this, a hair pulled from his head may become curly or red. Were he to lose a tooth, it might become a horse's molar. Indeed, it's quite possible that someone testing a blood sample would find that it somehow came from a banana! This does mean that it is impossible for him to be cloned, and that tracing him via forensic methods will lead to many bizarre dead ends.
(Unfortunately, it also means that getting a transplant of some kind would be impossible, since the hospital would have no way of knowing what his body would need to match to in order for it to be successful, but that's much, much less of an issue. The closest would be the need for a transfusion, and he already knows his blood type.)
If he dies while wearing another form, his body will automatically revert back to human.
Each form that he can take beyond 'human' comes with physical and/or mental side effects, as none of them are his true body. They are as follows, with the accompanying sin associated with each body and/or an example of what he looks like in it.
Human5'11", 190lb, lean and well-muscled. Fern green eyes and medium golden-brown hair kept mostly short save for a long shock brushed down over one side of his face.
-Very old, very faded burn scar wreathing over left shoulder-blade and up to top of shoulder.
-A long, thin white scar near his left ear.
-A thick, dark scar wrapping 3/4 of the way around his left bicep from nearly having his arm severed clean off.
-A set of dime-sized puncture marks in two long rows all the way down the right side of his torso; thinning out to one row over the shoulder and ending in a single mark midway up the side of his neck.
ASSOCIATED SIN: LUST
Craves being paid attention. Has a tendency to devote himself to others, whether as friend, family, protector, or lover. Thoroughly enjoys and often revels in carnal pleasures.
SIDE EFFECT: None. This is his natural body.
Near Human
NOT CURRENTLY PART OF HIS SHAPE SET. TO BE UNLOCKED AS THE FINAL FORM SOME TIME IN THE FUTURE. NO IMAGE AVAILABLE JUST YET.
6'4", 230lb. Longer, sharp finger/toenails. The shape of his eyes become a little rounder, and a thinner, lighter ring of skin appears at the bottom. The ears become more animal-like in nature, elongating and pointing a bit, with slightly rounded backs, and are capable of small rotations. His cheekbones are a bit more prominent, with the front of his face around his nose and mouth pushed out some to resembling a flattish muzzle of sorts. The hair on his head grows longer and much thicker, and his teeth lengthen and sharpen to a small degree.
The underside of his nose turns a little darker in color and gets a bit of a rougher texture. His lips are thinner and darker, with the upper one suffering a very small cleft in the middle. Trowa's arms and legs are a bit longer than normal, as are his hands and feet. He is far more flexible and graceful in this body than as a human, with his senses amplified to about twice their usual maximum.
Trowa's wrists, elbows, jawline, spine, ankles, and the backs of his calves pick up thin lines of soft, very short, pale brown fur. He can speak normally, though it is in a lower, softer fashion.
ASSOCIATED SIN: GREED
Focuses on and is fierce about keeping possession/protection of what is His, both in territory and in regards to people. Vaguely hedonistic in response to having enhanced senses while retaining mostly-human body. An inclination to being cattishly fickle if it gets him what he wants.
SIDE EFFECT: While in this body, Trowa's senses are enhanced; they are all twice as powerful. Unfortunately, this means that he is easier to distract, making his judgment a little lacking as compared to usual. If there is something new to experience, or something fascinating to check out, or something he already knows he enjoys as a human, he will be more inclined to try it--even if he wouldn't normally or knows he shouldn't. Curiosity killed the cat... but then again, satisfaction brought him back.
SIDE EFFECT: Having seen and owned and felt and tried everything at double the usual, Trowa becomes extremely territorial when he returns to his human body for 1/3 the time that he has spent as a near-human. What (or, possibly, who) he considers His should remain his to have, and god help you if he thinks you're threatening its safety or status. He is less willing to be charitable or share with others, more likely to get into a fight over perceived territory, and in the worst cases may obsessively 'mark' things--whether with a pen or a label-maker or simply hovering nearby them--or take with him what he feels is his right to have--no matter who or what it belongs to in reality.
Were-Lion (Great Cat)9'11", 900lb. Capable of growling a few basic words at a time in a deep and snarling voice. See image for best visual example. Moves on either two or four legs, though he is a little faster on four--can reach up to 75mph and run for several hours before needing to stop and rest. Strength max. between 1500 and 2000lb. Can claw or bite through stone and metal and able to use his hands as a human would with only a little loss of dexterity.
ASSOCIATED SIN: ENVY
The second mind wants to be in control over the brain and body. 'If I can't have it, nobody can' style reactions often resulting in destruction of property or the death of people. Wanting to have indications of both extremes and therefore ending up in the middle of human and lion.
ASSOCIATED SIN: PRIDE
Everything the second mind wants is a sense out of being the best--it's the strongest, so it should have power over everything else; it has power over everything else, so it should have the right to decide what lives and doesn't; it's hungry, so it deserves to eat those that aren't worthy of living. Nothing is ever good enough for it. Both the lion and human forms and Trowa's natural mind are perceived as inferior.
SIDE EFFECT: Trowa suffers from a permanent secondary background mind of sorts that attempts to influence his actions by urging him to respond to every situation in one of four ways: Overpower it, kill it, eat it, or claim it as his. How well he can ignore it and avoid succumbing at any given moment depends on a number of factors.
SIDE EFFECT: The longer Trowa spends in this body, the more power the secondary mind gains over his actions. When he hits twelve hours uninterrupted use, he becomes shape-locked and mentally lost to the beast until he can either be calmed down or forced out of the body via science/magic. Everything becomes a kill/run scenario.
Oversized SabertoothRoughly the size of a large car/small truck. Somewhere between two and three thousand pounds but good luck getting him to stand on a scale long enough. Able to run at 30mph for up to an hour straight.
ASSOCIATED SIN: WRATH
Violent beyond reason, continuing to attack the opponent long after they are down and sometimes carrying on even past the foe's death. As largest body in relation to mass, and with the longest fangs, is a display of sheer killing power.
SIDE EFFECT: While in this body, Trowa is extremely violent in response to being engaged in an actual fight (play does not count). It is quite possible that he will continue to attack his opponent no matter how bad off they already are, unless he can keep control of himself/measures are taken to soothe him back to a more manageable level--or the foe is simply too mangled to do any more worthwhile damage.
SIDE EFFECT: Because of the massive size increase (to nearly the size of a small truck) when he takes on this body, it physically exhausts him. When he returns to human form, he becomes extremely tired for 1/4 of the equal time he spent in the shape and liable to fall asleep without warning if sitting/laying still too long. Alternately, getting three hours' solid sleep will remove the effect no matter how long he was in the body.
LionNormal lion body and all that comes with it.
ASSOCIATED SIN: SLOTH
Why get up and chase when you can sleep right here in the sunbeam for as long as you want? Who needs to do the hunting if someone else will provide? Why work yourself to the bone when you're the top of the food chain?
ASSOCIATED SIN: GLUTTONY
This is my food. This is not your food. I will not let you have this food. I am going to stuff my mouth, as fast as I can, with as much as I can, even to the point that I should feel sick for doing it.
SIDE EFFECT: While in this body, Trowa is more likely to choose to rest or fall asleep than he would be while spending his free time as a human. As such, he usually uses this body when he wants to relax. However, it is perfectly functional in every other way and will still go long periods of time on high activity if he needs it to.
SIDE EFFECT: Because of the sheer energy use required to change form so completely, Trowa becomes insatiably hungry and thirsty upon return to human form. He can not refuse anything he would consider 'food' or 'drink' as a human if it is physically presented to him, no matter if it's a carrot-mango smoothie, or a chocolate cake, or even a leg of lamb he knows has been poisoned. If he is not intentionally given food by another person, he will seek out anything he can get his hands on but remains able to pick and choose what he wants.
This will continue until 1/2 the amount of time he was in the lion's body has passed, or he has devoured roughly 15 pounds of food and/or drink, whichever comes first. Fortunately, the food is nearly instantly metabolized, so he does not kill himself or get fat from doing this. He has learned to put off the cravings for a little while, after two years of training with this power, making it possible to cut the time to 1/3 instead if he concentrates hard enough.