Mikhail is not a mutant. He's an altered human. (His father was given the super soldier serum (As in Captain America), but nothing happened. Mikhail's genetics were changed due to this.)
Rather akin to how Nightcrawler teleports, as in moving to another dimension really close to the 'real' world, Mikhail can teleport. It allows the teen to side step himself to a bit of pocket space. This is not a movement power such as Nightcrawler or Darkstar have though. It does not allow Misha to move distances. Instead it allows him access to this other space.
- It should be noted that Misha has more training than his age would suggest. As soon as his Aunt found out he had powers, believing him a mutant, he's been training to learn the limits of his ability. Expect him to be fairly confident in his powers.
This bit of dimensional space is very close to the 'real world', and even echoes the real world in the form of geography. You still have an appearance of the real world with its people, buildings, items, and wildlife, all going about their lives and means, but they are ghostly in substance. This includes weather effects and other natural disasters. It is removed enough to where it might even appear to be a bad hologram. All visible objects partially translate over on the other side, but without any substance. Sounds also translates to a degree. This means that on the other side it's like shifting to a slightly out of focus normal world that you can not touch, or otherwise interact with in any regard.
Light and Sound cross the weak dimensional boundaries, but do not cross back over. The image of the real world is a one way trip. Anything that happens within the pocket space is invisible to those who do not have the means to sense it.
To Clarify: From inside he can see and hear the real world to a degree (Slightly muffled sound, and fuzzy sight. Enough to see and hear normal occurrences, but not read newspaper, or hear whispers.), yet from inside he is unable to effect normal space in any degree. He is either all the way in, or all the way out.
Once inside the dimensional space Mikhail is technically invisible and untouchable for those in the real world.
It could be described as in how some people think of ghosts these days. Like they are out of phase with our own reality, yet able to see and hear us - on occasion able to interact with us as well. Only Misha is unable to interact once in the pocket space.
He does need to be careful about where he reappears. If he were between walls, or strangely in a car, if he were to shift back to the real world he would be painfully, even perhaps fatally, stuck. It's similar to phasing in that regard.
The power is touch only, and it is either all or nothing. Misha can not do things like shift most of his form while leaving a hand in the normal world. Either in or out.
Inside, and alone, he can remain there indefinitely; within the limits of his human body. While there is an atmosphere there, and it's actually a comfortable mid 70s temperature, there is no food or water that he doesn't bring himself. (See Inanimate objects for clarifications on what can and can't be moved over.) In fact the other side is quite empty except for what he brings with him. If there is anything naturally living in this strange dimensional space he has yet to run into it.
In fact any living thing will give him trouble. The life force of living things keeps them too grounded in the real world for them to remain in the pocket space. Misha must remain in physical contact with any living thing for it to remain in the other space. Once released it will automatically revert to the real world. This could be troublesome depending on where they are released, and would work much like a phasing ability.
However, bring over one person, and that time limit drops to only half an hour. (To clarify, living things give him trouble and have a time limit. Inanimate objects do not.) Bring over two people, and that time drops to roughly ten minutes. Once that time limit is up, and his strength to hold them on the other side is spent, those people/living things will automatically return to the other side. Misha himself will remain on the other side, and even unable to return for some minutes. He will need to catch his breath as it were. Holding people inside can be tough if he pushes himself to the ends of that limit. For the people held on the other side for as long as possible the whole situation will become uncomfortable. Not painful per se, but like they are being stretched or just knowing that something is not right. The longer they are inside, the more focused the image of the real world becomes as they begin to revert back to the real world.
(It all depends on the mass of the people too. Some with denser cell structures are going to be exceedingly difficult to move, if they can be moved at all.)
There are going to be people who can out stubborn his ability to move them as well. (Meaning that consent and plot do have factors in this.) Normally only those with some dimensional means can stop, or those who can control whether or not he is able to touch. If he can not touch, he can not shift it.
Inanimate objects can be shifted over, within his mass limit (Which is roughly five adult humans.), and after being released will remain in on the other side until moved back. Meaning he can store things indefinitely. (If he can remember where he put them,) Inanimate objects do not have any kind of time limit for how long they remain on the other side. Doesn't matter what it is, so long as it isn't alive, and if it's within the mass limit, it can be moved and will remain on the other side until Misha purposely moves it back. Living things, animals, plants freshly removed from the ground (Dead plants can be stored. Ie: Fruit and such.), and especially people can be shifted over, but if released they will not remain on the otherwise. Instead living things will automatically shunt back if no longer in contact with Misha.
The mass limit is only about what can be moved at any given time, not what total can be kept in the other space. This allows him to store things on the other side indefinitely, or even remove chunks of walls/doors/etc to allow himself exits. In fact the other side might even be cluttered depending on if he's been in the area a while.
I specifically said a mass limit as there are some materials he simply will not be able to move. Special alloys such as Captain America's shield, or the materials that make up the super villain's prisons. This does include some people as well, and what he can shift over might even be plot based all things considered.
Also in the unmovable are things that have too little mass to allow him touch. Lasers, gases, and even beings with little mass, are simply going to be out of his ability to shift over.
The pocket space does conform to the real world in true geography. It also has gravity. There are some limits about his transferring over too. Especially when it comes to velocity. That translates. So if he's moving at sixty miles an hour when he crosses sides, he'll keep that momentum. There are dangers involved depending on the situation.
A side note about vehicles. If he's in the pocket space, and also inside the vehicle, he will not be effected by said vehicle, and it will leave him behind.
Anything inanimate that he chooses to leave on the other side will remain where he put it. There is a problem though. If he leaves something in the pocket space while in Russia, he won't be able to access it in America since the distances are the same regardless of which side. It does mean he can safely store things in a place few can access.
Strong telepaths, and those with dimensional sensing abilities, or equipment, will be able to know he's there. He might even appear as a ghostly form depending on the person and ability/equipment. Even those who can see ghosts stand a good chance of being able to see him, for all he wouldn't be able to communicate with them in any other way then hand motions.
A stunt he can manage is a strange kind of shield. He can externalize his ability to a degree, but even here the touching rule applies. The shield is directional, meaning only one side can be covered, and only objects it can touch will be trans-located.
Like he could throw up the shield and shift bullets fired at him to the other side to protect himself if he were being shot at, but he could not stop bullets from more then one direction. As the bullets contact the shield they would be transported to the other side and thus not hit anything behind the shield. It would make the other side a bit of a mess as the bullets scattered around due to momentum.
The shield is formed from his hands, Is roughly two thirds of his own height in length and width in size, and can only be as far from his person as his arms reach. (Meaning it's around four feet in diameter if he chooses to make it a circle. Most times though the teen is not worried about getting the shape perfect.)
The mass limit also allies so that the shield can not stop something too large for his maximum. Nor can he stop things with little mass. Like lasers, fire, or gases. There is also a mass minimum, for he simply can't move what he can't touch. If someone tosses a gas grenade Misha would be able to do nothing about the gas filling the room. (For all he could shift himself to the other side and not be effected by it.) Nor is the shield a true form of defense and protection. It works only through means of transporting the attacking item(s) that touch the shield, thus protecting Misha by it not being able to hit him. If the attacking item/person were beyond his mass means to shift, then Misha is rather SOL. Nothing will happen, and the young man will be hit. Rather like being stomped on by a Sentinel. There's not a whole lot he can do to shift such a huge creature. (But he could remove part of the foot since the machine isn't alive.) Or like if the Hulk were to take a swing at the teen. Misha could try to use the shield, but the Hulk would be way out of the mass limit and so nothing would happen. Hulk would hit Misha. Anything inanimate that is shifted in this manner will end up as clutter on the other side.
He can shift people, should he be able to shift them at all, to avoid blows as well. Like wait for the blow to connect with the shield, shift the person so the blow passes through Misha, then let them go. Like with all living things they will automatically return to the real world once contact is broken.
Due to the nature of the teleportation, Mikhail can cut nearly anything with his power. This involves him shifting part of the object, even if it's a new atoms of it, to the other wise, thus cutting the object into pieces. His limits are again on mass, meaning that he can't cut adamantium, or the other super strong materials that exist in the marvel universe. Still, that leaves a great deal for him to do damage to.
This is the only affect he can manage that isn't touch only, and even then it kind of is. Expending from his hands, and looking like a vague haze on the air, are two ten foot long 'whips'. Think Omega Red kind of thing. These whips are thought controlled, able to go a fill 360 around his person, and what they touch they cut. That's all they do. Cut. They can not grasp or pull on things. They have only one use.
Their limits are the same as the rest of his power. Can't cut things that have too much mass, and it's always consent and plot related.
Mikhail most commonly uses them in conjunction to the strange mix of martial arts that he was taught by his aunt.
Technology issue:
Technology can not record from the other side. Works fine, within battery limits, but nothing can be video or audio recorded. No sensory devices work within, and everything gives back merely static. The devices are not harmed, and will work fine once returned.
Summary of power flaws:
The power is touch only, and it is either all or nothing. Misha can not do things like shift most of his form while leaving a hand in the normal world. Either in or out. Once inside he can not interact with the real world in any manner.
He has a mass limit of roughly five people. Anything larger then that can not be shifted.
By himself he's no time limit on how long he can remain on the other side, but bring over one person and that time limit drops to only half an hour. Bring over two and that time drops to roughly ten minutes. Once that time limit is up, and his strength to hold them on the other side is spent, those people/living things will automatically return to the other side. Misha himself will remain on the other side, and even unable to return for some minutes.
He will need to catch his breath as it were. Holding people inside can be tough if he pushes himself to the ends of that limit. For the people held on the other side for as long as possible the whole situation will become uncomfortable. Not painful per se, but like they are being stretched or just knowing that something is not right. The longer they are inside, the more focused the image of the real world becomes as they begin to revert back to the real world.
Misha must remain in physical contact with any living thing for it to remain inside. Once released it will automatically revert to the real world. This could be troublesome depending on where they are released, and would work much like a phasing ability.
Seeing the real world from the other side is possible, but it's not exact. Vision is slightly blurry, and sounds muted. He could understand people, but not read a news paper. The landscape shape remains the same.