Once a young male leonin, Makresh's phyresis has taken a tool on his appearence. His skin and musculature seem indistinguishable, being a silver mineralised/semi-metallic tissue akin in some ways to tendons and collagen fibers, devoid of integrument like fur or whiskers. This musculature-skin is quite thick in some areas, while in others it hugs the skeleton visibly; the abdomen is basically now a tube composed of his spinal collumn, the muscle-skin, and whatever remains of his guts. Gold plates cover large portions of his body, forming a protective armour, though not to the extend of the Machine Orthodoxy phyrexians' porcelain plates. His head is the least modified body part, though still subjected to several alterations besides the loss of his fur, whiskers and mane: his ears have long since disappeared, their space now occupied by gold plates, his lower jaw is now almost entirely made of gold as the exoskeleton fused with the mandible bone, aside from the attachment sites of his cheek muscles - which are in the process of being severed anyways -, and long, thick gold quills rise from his neck and headtop. His eyes have white irises on black sclerae, constantly leaking oil tears.

Makresh generally does not wear clothes, beyond simple rags. Overall, little of his anatomy has been modified beyond letting the oil do it's work, as he knows too much flesh replacement could damage his spark.

Growing up in the Razorfields, Makresh never knew true peace. In the final years before the Machine Orthodoxy laid waste to the place, the leonin prides were divided between the two heirs to Raksha's legacy. Makresh's family was among the rebels, aligned to Juryan, the first of the two leonin groups to contact phyrexians. Even before the de facto invasion occured, the pride was largely compleated or in the way of compleation, so a then teen Makresh was forced to leave with a few others to Kemba's pride. Alas, the fight for their home was short, and Makresh spent the next year or so between the Furnace and the last Razorfield stronghold, Bladehold, where the usually served as a spy and smuggler. Finlly, Elesh Norn's forces laid waste to Urabrask's realms, and many mirrans were slaughtered, ending the mirran resistence for once and for all. Makresh was captured by Norn's forces, who desired to compleat him, but accidently fatally wounded him, allowing his spark to ignite.

Waking up in Zendikar, Makresh was taken in by the survivors. Learning of his nature as a planeswalker and of the plane's dire predicament, he fought valiantly against the eldritch monsters, but as time went on he began to felt something stirr within him. Fearing the worse, he left Zendikar, exploring the multiverse for a possible solution. Time went by, and the symptoms began to become more appearent, and nightmares more vivid and alluring. Becoming more and more desesperate, the leonin tried countless methods to stall the progress of his infection, until suicide became the only clear answer. But by then, it was too late: the whispers of the oil had bled into the rational mind, first reminding him of the consequences of his corpse laying anywhere, and then gradually corrupting him. His mind's deranged progress reflected his progressively more evident phyresis, and soon he became the very thing he once fought against.

Currently, Makresh has his time divided. Part of him is strategising, seeking to make his plans of a multiverse-wide phyresis come true. He is aware of Phyrexia's many scattered remains, and spends most of his time trying to take over them, to install puppet leaders that lead these phyrexian civilisations into fullfilling Makresh's desires. Regardless, he has for the moment stayed away from New Phyrexia proper, seeing it as far too powerful and far too filled with power hungry individuals to attempt a coup, but he ultimately invisions it as Phyrexia's true seat of power when it's empire spreads across the multiverse. Another part of him still seeks the cure, however, and prevents him from infecting other planes.

Prior to his predicament, Makresh was a leonin with severe self esteem issues, largely due to perceived cowardice and a form of autism. Since early on that he displayed dilligence, something that intensified as his insecurities increased. After his planeswalkerhood was attained, this dilligence was translated to the fight against the Eldrazi, and afterwards into a frenetic despair to search for a cure and to avoid dooming other planes. As his search continued, he began to feel a desire to improve upon the cultures he came across, to better prepare them against the types of evil he had seen, as well as to fix injustices he perceived in the numerous societies he came across. These ambitions intensified as his infection matured, trying more and more to prevent corruption, both from outside forces and within the citizenry's hearts.

As his phyresis progressed, Makresh developed something of a split personality. He oscilates between a full blown phyrexian, seeking to give the isolated phyrexian hotspots the vision of perfection they so need, and the relics of his former personality, trying desesperately to seek for a cure while controlling himself from infecting other worlds. In between these, there are psychotic episodes where he loses his mind and attacks everything in sight, until he calms down as either of his "modes". Currently, Makresh's phyrexian identity has largely become dominant, his old self being reduced to a mere drive to keep looking for the cure and to prevent infection, almost instinctual in nature. This nonetheless still limits the compleated persona, ensuring more and more violent episodes as it tries to expell these relics.

Makresh's phyrexian ideology is that of a unified force against a hostile multiverse. He knows that phyresis is ultimately both necessary and righteous, that all need to know the truth, or else they'll be powerless to fight against the dark forces that terrorise - or are awaiting to terrorise - every plane. He also sees compleation as a means to fortify individuals morally, to strip them of their fear and weakness and to stand as the more powerful side against any adversity; in Phyrexia, flesh and mind alike are refined in the likeness of metal, to be unbreakable, yet malleable. To these ends, self improvement and virtue are the basis of a successful Phyrexia, to make sure each being under it's stewardship is altered as to fulfill it's function without hesitation or weakness, and to be capable of being reapproprited and adapted in response to the needs of the community. Mindless drones and beasts, while useful tools, are never to be the end goal of Phyrexia, as they cannot feel the righteous zeal and subsequent strength that an enlightened mind brings, and cannot adapt and change as well as an intelligent being. He is not above mental reprogramming and brainwashing, but it is of utmost importance that the compleated being is sapient.

Makresh has not changed his body significantly beyond allowing the glistening oil to modify it "naturally", largely because he is unusure of whereas exchanging flesh will damage his spark - as a compleated being, he has trouble differentiating the soul from the body. This works spendidly for Makresh regardless, as he feels the oil's work has granted him a body reflective of his role as a saviour, and that it serves to illustrate his focus on the righteousness of Phyrexia's collective resolve and the merits of virtue and zeal. He is not in the least bit averse to physical modification and flesh exchange, however, and blatantly encourages and dictates it as Phyrexia - or he - sees fit.

Makresh spends most of his time trying to dominate and perfect established forms of Phyrexia, believing them to not be benefitting from his wisdom and focused too much on superficial concerns -like unity without perfection, or perfection without unity - or on outrightly immoral pursuits like slavery and social darwinism. In contrast to his uncompleated socially awkward form, the actual Makresh has taken to manipulate his way to his desires, usually out of necessity. He still preffers to engage in brutal coups, however, both saving him time and allowing him to rejoice in his followers' strength and righteousness. Once in power, he quickly establishes the new system, installing a puppet praetor to carry out his will. He hopes that the guidance of these praetors will allow multiplanar travel to be possible and unite the scattered phyrexian colonises, before attempting to take over New Phyrexia. For the moment, the remains of his old self are strong enough to keep him from spreading the infection, and to temporarily stall him in a hopeless chase for a cure, something that frustrates the insanely ambitious compleated self to no end.

Prior to his planeswalkerhood, Makresh wasn't much of a magician, simply channeling mana for seeing in the dark. In his time in Zendikar, he learned some battle and healing spells, and as he travelled the multiverse he learned a plethora of healing and purifying spells, trying to stall the development of his phyresis. Trying to apply them to himself, he accidently discovered how to use the glistening oil in his body as a medium for his spells, a trick that his original self was horrified at, but that is the main style of magic the compleated Makresh uses.

Generally, Makresh uses the glistening oil in a similar fashion that hydromancers use water and sangromancers use blood, bending it to his will and using it as an extension of himself - and as means to quickly dispatch antagonistic phyrexians. He can also channel mana through the glistening oil, using it to weave more complex spells. For instance, he can cast hieromantic spells through his glistening oil, weaving it into bright tendrils that trap his opponents, as well as mind altering spells that make fellow phyrexians more compliant to his will, and uncompleated beings go through phyresis more quickly. By exchanging oil with other phyrexians, he can strengthen his allies and weaken his enemies, as well as pry memories open. This reliance on the oil makes Makresh exceptionally dangerous, having a resource of mana at all times, rendering his spell crafting quick and powerful, but also makes him vulnerable to those immune to the oil, as well as to phyrexians equally versed in using it as a medium for their spells.

Less often, he can also fire shards from his golden plates, as well as to lend them to allies, strengthening them.