Zero-Man

Born as a lithe, fit young man Kassidy Zestian is now a Bio-engineered android, equipped in a full suit of retracting armor colored in smooth white and grey. The mask changes his vision as well, his eyes turning into solid white orbs amidst a sea of black. His body is tone and thin. A thin scar runs under one of his eyes vertically from his life before the procedure

He often wears a ragged mantle or cloak over his armor, and he can fully retract it to wear pedestrian outfits, though doing so limits his strength and durability somewhat, and his mask and armor will reequip even at the cost of his current outfit if his sensors detect danger or he is harmed.

He doesn't look dissimilar from his previous life other than his hair being longer and him no longer having genitals or a navel.

Zero-man in full suit:

Zero-man without his mask:

Born as Kassidy Zestian, the young man was abducted from his homeworld not even knowing alien life existed. Expiermented upon and having his mind scoured for information and understanding for 70 years nearly destroyed the pysche of the young man, until he was remade into a near unstoppable machine meant to exterminate all life on his planet by his captors. He was made into their slave and little of him remained other than a template, but when he was deployed to his now war torn and near apocalyptic home to fulfill his mission he was captured for.
However a psychic managed to stop his rampage by restoring his mind and memories from before he was experimented on, removing his main prerogative and purpose from him, and with the man he destroyed said race and reclaimed his freedom, inso doing earning the nickname Zer0-Man by the military.

Afterwards, returning to his hometown only to find it a ruins with only a scarce group of settlers remaining, and disheartened with humanity and its governments over their actions it had taken in his absence, he attempted to end himself, no longer feeling human or like he belonged in the world that he returned to.

However, he soon found he couldn't manage to kill himself, being unable to starve, not needing sleep or able to catch disease, and what physical damages he could manage to himself healed, and he no longer seemed to possess any form of vitals.

Completely nihilistic, he almost resigned to throwing himself into the core of the planet to wait for the end, but his instincts kicked in while his hometown was attacked by bandits and he came to its rescue. Somewhat glad to have helped save his town and its people, he now resides in his old desecrated room and protects the city.

He doesn't interact much with the locals do to him knowing he'll outlive them many times over, but he is considered a hero by them nonetheless, and he still has nihilistic views and desires, but he can't help but defend himself and his homeland.

Biological immortaility:
Due to his enhanced biological structure being synthetically feed and oxygenated by his power core and the same material reactor that grants his regeneration (and that allows him to absorb his suit back into himself) he is functionally immortal.
Zero Point Energy Module (Z.PD):
Zero-man is powered by a Zero Point Module roughly 4x3x3 feet in size granting him virtually infinite energy. The container also stows energy aside that is used by his shields, while his main body uses varying amounts of energy depending on his action, the surplus being stowed away.
Quantum Computing:
Using a quantum computer to house his consciousness he has not only a virtually infinite storage capacity but also as long as any part of the computer exists he has full access to the whole of his memories and mental abilities. He is capable of FTL thought due to this though it is relative in computing speed to the amount of energy being used at the time, leading him to often using as little energy as possible to enter a sleep like state where his thoughts can take hours to fully process. At full power a single second would be the equivelent of several years to him.
Scanners and Senses
His mechanical form uses psudeo eyes that are actually high tech scanners and are linked to several 360 radar sensors and energy sensors. All of these process and gather information FTL Additionally his whole body can operate as an ear and can hear remarkably well as well as being able to simulate touch. He has specialized organs in his nose that can detect different chemicals and their makeup, and process similar to smell for him. However he lacks a sense of taste and his sense are occasionally muted as he redirects power, additionally none of them feel the same to him as his original human body.
Power shielding:
His sheild is a 2 meter egg shaped semi-physical liquid shield that generates from around any point of his body. The shield is fully protective across multiple dimensions and won't allow anything with velocity through once engaged, and will stop him completely when engaged relative to the nearest gravitational presences. He is also capable of bursting the shield out from him self, using its near instant generation to air step or blow back enemies with a sudden close range burst of power.
Sub-diemensional Storage unit
While not something he has full access to do to mental blocks and lack of understanding, he possesses a sub dimensional storage unit inside of himself that houses both his Energy core, it's storage units and enough of his brain and physical matter to reconstitute himself with the matter generator inside of himself. This is theoreticallycapable of being accessed anytime by him but he is unaware of this feature.
Material Generation and Healing
Another ability he can't make full use of, he possess an energy to material production device which can endlessly reproduce both his cells and their needed nutrients. They are theoretically capable of producing matter other than this and could make virtualy anything but his own lack of knowledge on the ability and nessary statistics of the structure mean he isn't aware of this abilities true potential.
Super Speed and Warping
While energy regulators usually keep him at human levels, when released he is capable of immense feats of speed, capable of moving fast enough to phase out of reality at post light speeds, warping spatially as he seems to blip in and out of reality, though his shielding and material structure are designed to limit the amount of stress he places on his local environments when performing such actions, this can be inhibited if nessary though at extreme risk of collateral damage.
Super strength and natural durability
Much like his speed his strength is similarly restrained in most occasions, though he lacks power by comparison to his strength he is durable enough to handle the immense strain both place upon him, and he can easily use his speed to replicate power. That said he still possess ludacrious strength compared to most, capable of lifting planemos and achieving strike force relative to several hundred megaton impacts.

Though physically he is nearly unstoppable he does possess a habit of gauging his strength to his enemies to avoid using too much power and being trapped for hours in the space of seconds, often leaving him open to needles or causing unneeded collateral damages.
Additionally his lethargic boot up processes and depressive tendencies tend to lead to people getting the drop on him or his hometown.
He is only immune to extraplanar attacks and threats when his shells is own and his core is vulnerable there, and the shield can only stop so much before it's reserves are taxed more than they produce and the shield is forced down do to sustained overclocking.
While his computer can process information and data at FTL speeds his own reaction time and comprehension can be much slower, and he can experience headaches do to info overload, occasionally forcing him into a stoic and deadly auto pilot that also engages when his life is threatened. It does not feel or think other than of survival and has no mercy.
He doesnt understand much of his own design and abilities and thus limits much of his own potential.
He lacks in drive and motivation most of the time and his nihilistic moods can lead to him occasionally being apathetic.
He views his immortality as a curse not worth the power it brings and has self destructive tendencies.
He can not fly truly and must instead wait for shield bursts to maneuver in the air.
His new body while similar to his old in form lacks reproductive measures and a navel due to both being viewn as necessary by those who modified him.
He lacks any ability to heal others to his knowledge and often curses his lack of "useful " skills.
While he likes to help others and see them do well in his harsh world he tries to avoid getting attached to any of them do to his fear of out living them.