Pale king

Dimensions. The Soul Master is noticeably larger than the Soul Distorter — this immediately catches the eye when compared. His figure is massive, which emphasizes the accumulated power (and at the same time the weight of the very soul energy that enslaved him).
The body and the "pillow". The boss's body seems to be additionally voluminous — it gives the impression that there is a soft lining or padding layer under the outer layer. It's not just a texture, it's part of the design.: this visually conveys the idea that he is "inflated" by the absorbed energy of souls.
Face and eyes. He has a long face with pronounced, slightly creepy features. His eyes are large, with an unnatural, frozen look — this perfectly reflects his condition: he is no longer in his right mind, succumbed to the force he was trying to control.
The cape. The key detail that immediately distinguishes it from the Distorter. The Soul Master is wearing a red cape. An important detail: she has a clasp — it's not just a piece of fabric, but an element that adds personality and "humanity" to the image (well, as much as possible for a beetle).
General proportions and posture. In general, the silhouette is quite static, but in battle this is compensated by his manner of movement—he hovers and moves sharply around the arena, which contrasts with the massiveness of the body.
What does this mean in the context of ent?
This design is not for nothing. The Soul Master was the head of the Soul Sanctuary and a scholar. He collected and absorbed the energy of souls, hoping to find a cure for the Infection. But the force turned out to be too great: he miscalculated it, succumbed to it, became "intoxicated" by it, and eventually lost his mind. Visually, it reads like this: the massiveness and "bulkiness" of the body is a consequence of the constant absorption of souls, and the insane, frozen look and unnatural proportions are a direct consequence of the fact that his mind no longer controls this power.

— A boss in the Hollow Knight game, found in the Sanctuary of Souls.
The head of the Sanctuary of Souls. He collected the energy of souls, hoping to delay the grief of Hallownest, but eventually he was enslaved by its power.
The residents of Hallownest did everything they could get rid of the infection. But alas! Maybe it's because the infection came from their own gut, which you can't escape from.

The Master of Souls resembles a Soul Distorter in his appearance, but has enlarged dimensions and a red cape with a clasp. Just like the other inhabitants of the Sanctuary, the Master did not calculate the strength of the Souls he controlled, and soon after that he became insane, succumbing to the light.
After defeating the Master, the Knight will be able to fight the Dream Slayer boss, a stronger version of the Soul Master.

Lurien is an anthropomorphic beetle. His distinguishing features
are his body. Under his cape, he has a completely black, rather than the usual translucent or chitinous coating for beetles. This feature of the body's structure makes it similar to other creatures from the Void: Vessels, snail shamans, Zot the Mighty and Hornet.
Head. At the top of the Spire where he lived, Lourien had a large telescope to observe the City of Tears.
Clothes. He was wearing a cape and probably a mask —it was originally intended that the Dreamers would wear the same masks, and Lourien's body shape was supposed to resemble the mask that Monomone eventually got.

Unlike other Dreamers, Lourien's past is almost never revealed in the game. Before becoming a Dreamer, he was the guardian of the City of Tears, watching the capital from the height of his Spire. Completely devoted to the Pale King, the beetle agreed to become a Seal for the imprisonment of the Hollow Knight in a Black Egg. In contrast to Monomona, who wants to break the Seals, Lourien, on the contrary, does not agree with this decision and wants to leave everything as it is.
Not far from Lourien's chambers is a small room with a tablet that captures the last words of the Dreamer.

Once upon a time, a Pale Worm crawled to the Edge of the kingdom, died and was reborn into a King[13]. The creature was reincarnated to look like the Hallownest beetles[14].
After being reborn, the Pale King expanded the consciousness of some beetles, giving them intelligence. The monarch wanted the beetles to serve him[15], promising in return that Hallownest would exist forever[16].
The moths that worshiped Radiance also began to serve the Pale King, turning away from their creator and forgetting her[17]. One luminous being replaced by another [18]. The mushroom inhabitants of the Mushroom Wastelands also joined the Hallownest: they believed that the Worm's gift of foresight[19] would protect them[20]. However, not all of them had a positive attitude towards the power of the Worm's provision[21].
But Radiance did not give up so easily.: She wished the bugs would remember her again. The influence on the beetles' minds eventually resulted in the appearance of the Plague[22]. The king tried to imprison the forgotten deity and stop the spread of the infection by using Void Vessels created specifically to contain the infection inside himself. All the Vessels are the children of the White Lady[23][24] and the Pale King[25].
After many failed attempts, a Hollow Knight ascended to the top of the Abyss, after which the Pale King sealed the Abyss. But to this day, failed Vessels roam there[26].
In order to protect the Hollow Knight, the Black Egg had to be sealed. To do this, Pale asked for help from three mighty beetles. Herra the Beast agreed to become a Seal, but on the condition that the Worm would grant her a child.[27][28] Thus, the Hornet, the guardian of the ruins of Hallownest, was born. Lurien the Guardian and Monomona the Mentor voluntarily sacrificed themselves to the Vessel.
Subsequently, it turned out that the King was mistaken: The Hollow Knight, which was considered the best Vessel, had a flaw [29], and therefore could not completely absorb the Plague.

The Pale King is the ruler of Hallounest and his king, the consort of the White Lady. Together with the Root and the guards, he lived in the White Palace, from where, apparently, he managed the affairs of the kingdom.
The beetle is short, dressed in a white robe covering the entire body. The monarch's "face" has a seven-pointed crown, thereby forming a crown and once again hinting at the special origin of the King. It was emitted a powerful pale light [1][2], so that it was even painful to look at it[3]; it possessed extraordinary intelligence, surpassing the rest of the beetles[4].
The monarch was secretive and tried not to show himself to his subjects[5]; they worshiped the King with the help of special idols[6][7]. The Hallownest beetles were sure that the lord created them and everything that surrounds them[8]. With the arrival of the Worm, technology also came: concerned about the comfort of his subjects, the monarch put a lot of effort into creating tunnels of horns, elevators, trams and other devices for beetles[9][10]; most of the buildings bear the seal of Hallowest, a symbol of the Pale King's power[11].
The ruler appears still alive in the Knight's memoirs[12]. Together with the Hollow Knight, he comes out of the Abyss and seals it. TGT At the end of the Path of Pain, there is a King and a small Hollow knight who look into the distance. After a few moments, the couple looks at each other and disappears into thin air.

The kingdom of Hallounest, which has been reduced to ruins, with most of its population dead, missing, or engulfed by a raging Plague. On the surface of the kingdom, in the small town oof Dirtmouth, the last civilized beetles remained, until they also went into the depths of the kingdom through a small well. The last remaining villager, the Elder, meets with the Knight and tells about the tragic fate of the city. In the process of exploring the ruins, the hero will meet with several more wanderers, who will later open their homes, thereby reviving the fading city a little.
As the kingdom explores, it becomes clear that the Hallownest that appears before the player's eyes was created by the Pale King, the reincarnation of a deceased giant worm, who gave each beetle an identity, as beetles used to live like animals. The Pale King banished Radiance and replaced "light" with "pale light", guiding the beetles into a new era of technology and civilization. It is not known for certain exactly how the King expelled the former ruler, but it is very likely that the expulsion was not carried out without the help of moths, which, apparently, possessed individual consciousness and, as the Seer says in one of the dialogues, were created from the light of Radiance itself.
This desire was suppressed by the Pale King's light, and soon after it began to manifest itself as a Plague that returned the beetles to their primitive, aggressive state. It is worth noting that not all Hallownest creatures were susceptible to infection: mantises, unlike the inhabitants of the Deep Nest and other Hallownest beetles, kept their minds intact (although some of the mantises specifically succumbed to infection in order to increase their physical abilities), which, however, did not affect their cruel ways in the tribe.
At some point, the Soul Master and his followers suggested using the power of Souls to get rid of the infection, but the Pale King rejected this proposal. In any case, the inhabitants