The strength of the demons in different works was divided into different levels. In "Reincarnated Slime," the demon evolution system had lower-level demons (corresponding to Grade F to Grade A cannon fodder), upper-level demon generals (corresponding to Grade A and above), demon lords who could evolve into demon lords (corresponding to demon king species) after receiving meat, and also divided into disaster level, and catastrophe level. Most demon kings were disaster level, and a few awakened demon kings were catastrophe level. In the [Coiling Dragon], there were seven Star Fiends (Highgods, who had completely fused four profound mysteries), Shuras (Highgods, who had completely fused five profound mysteries), and Highgods Paragons (Highgods, who had completely fused six profound mysteries). In the storyline related to the Masked Rider, there are low-level demons-miscellaneous soldiers (weak combat power), first-order demons-outlaws (strong actual combat power), and second-order demons.(A fusion between a Desperado and a contestant after signing a high-level contract, with stronger abilities and the ability to freely transform), Tier 3 Demon Desperado (A complete form after gaining Giff's approval and receiving his power baptism on the basis of Tier 2), Tier 4 Demon (Possesses Tier 3 strength and has Giff's approval. Currently, there is only one, and its combat power exceeds Tier 3 by one level), and so on. In addition, there were other demons. They were weaker than the first-class demons, but they were still powerful. Their abilities included controlling human emotions and desires, creating chaos and destruction, and were often called "fallen angels." The first-class demons were even more powerful. Their strength was unimaginable. Their abilities included controlling other demons, manipulating natural elements, and controlling human thoughts and actions.

The cultivation realms of yao under different systems were divided differently. Under one system, there were Spirit Gathering, Intelligence Comprehension, Body Forging, Bone Refining, Demon Core, Form Transformation, Soul Condensation, Demon General, Demon King, Void Shattering, Tribulation Transcendence, and other different levels such as Star Fire, Transformation, Soul Seed, Yin Spirit, Demon Mansion, and Six Chakras. In Journey to the West, monsters could be roughly divided into six levels. The lowest level was the mountain patrolling monster. The fifth level could remove the beast head and control some basic spells. The fourth level could dominate small places. The third level had extremely high combat strength. The second tier of monsters had a powerful background. The highest level was the Nine Spirit Yuan Saint.
In the setting of a certain novel, demons and devils were divided into nine grades: first-grade demons (high-grade demons), second-grade to third-grade demons (high-grade demons), fourth-grade to sixth-grade demons (middle-grade demons), and seventh-grade to ninth-grade demons (low-grade demons). There was a hierarchy in "Demons of the Abyss of the Worlds," but the reference materials did not clearly give the specific content. It only mentioned a story that was born in the bottomless abyss, abandoned everything in the past, and ascended to the Supreme King with blood and fire in the midst of slaughter and destruction.
There were many types of demons, and different systems had different divisions: - In some works, there were demons that corresponded to the natural elements, such as the moon demon Curse Blue, the mountain demon Borgon, the wind demon Howling Wind, the lightning demon Zusu, and the water demon Basha. - In terms of religious divisions of demons, there were Dybbuk in Judaism and Legion in Christian. - In the system related to the Bottomless Abyss, there were Dretches (Tanari), Quasi Demons, Succubus (Tanari), Witcher Spiders, Demon Hunter Spiders, Flor Demons (Tanari), Berserker Demons (Tanari), Bewitching Demons (Tanari), Soul Judgment Demons (Tanari), Six-armed Naga Demons (Tanari), Balor Demons (Tanari), etc. There were also demon lords and some gods living here, such as Demogorgon and Graz. Regarding the classification of levels, some of the Christian concepts included Peter Binsfield's classification of the Seven Princes of Hell. This was a demon level formed based on the seven sins. These Seven Princes of Hell were sinners who were punished for specific crimes committed during their lifetime. However, this classification was more based on the interpretation of religious doctrines. In general, the types and levels of demons varied in different cultures, religions, and works.
In the Wilderness, strength levels were usually divided into the following categories: [1. Spiritual Apprentice: A person who possesses basic spiritual power and can perform some simple spiritual operations.] 2. Cleric: A person who has mastered a certain amount of spiritual techniques and has a higher spiritual power can perform more complicated operations. 3. Cleric Assistant: A Cleric who has a certain amount of spiritual power but is not mature enough in spiritual techniques can provide help to people with higher spiritual power. 4. Spiritual disciple: A spiritual disciple who has already become a spiritual master usually has mastered some important spiritual techniques and can continue to study. 5. Cleric Disciple Assistant: A cleric assistant who works beside a cleric disciple and is responsible for carrying out specific tasks or providing guidance to people with higher spiritual power. 6. Cleric: refers to an outstanding Cleric who possesses extremely high spiritual power and spiritual techniques and can compete fiercely with other Cleric. 7. Cleric Disciple Leader: A Cleric who has extensive influence and leadership among the Cleric Disciples can lead a team of Cleric Disciples to carry out more complicated missions. 8 Great Spiritual Masters: A Spiritual Master with extremely strong Spiritual Power and strength can engage in high-intensity confrontation with other Spiritual Masters and even destroy the other party's Spiritual Power system. 9. Cleric Disciple Grandmaster: A Cleric who has extensive influence and excellent skills among the Cleric Disciples can guide other Cleric Disciples and provide them with the highest level of spiritual techniques and guidance. [10 Great Cleric Disciple Leaders: A Cleric disciple with extensive influence and outstanding leadership skills can lead a team to carry out more complicated missions and battles.]
In the Wilderness, the levels of strength were usually divided into different levels according to the strength of the person. The following are some common levels of strength: 1. Spiritual Apprentice: The lowest level of martial artists can only use simple weapons and magic to fight. [2. Cleric: Warriors who are slightly more advanced than spiritual disciples can use more complicated weapons and magic.] 3. Spiritual Apprentice: Warriors who are higher level than Spiritual Apprentices have a certain amount of magic ability and can use higher level weapons. [4. Cleric Master: Warriors who are higher level than a Cleric Master have more powerful magic abilities and more complex weapon techniques.] 5. Cleric Master: A very powerful martial artist with almost unlimited magical abilities and superb weapon skills can engage in almost unlimited battles with spiritual disciples and Cleric Masters. 6. Cleric Shishishi: Extremely powerful martial artists can communicate with the power of the entire mythological world and even control the power of the mythological world itself. Other than that, there were also some more detailed strength levels such as Elementalist, Demon Hunter, Cloaked Warrior, and so on. The specific division of these levels and the level of strength would vary according to the plot and setting of the novel.
In " Desolation ", the strength level was usually determined by the strength of the character. It could also be set according to the background, experience, skills, and other factors. The following are some common levels of strength: [1. Boundless Heavenly Origin: The highest level of strength refers to a person who has reached an unparalleled height and has extraordinary abilities.] 2. Void Condensing Heavenly Essence: The second highest strength is slightly weaker than the Boundless Heavenly Essence. It refers to a person who has a certain strength but has not yet reached the realm of the Boundless Heavenly Essence. [3. Nihility Heavenly Origin: Medium strength refers to a person who has a certain level of strength but is relatively weak compared to other people.] 4. Xuan Xiao Tian Yuan: Low-level strength refers to a person who has a certain level of strength but is relatively weak compared to other characters. 5. Condensing Heavenly Essence: Once again, it described a person who had a certain amount of strength and skills but had not yet reached the realm of Xuan Xiao Heavenly Essence. 6. Condensing Heavenly Essence: Once again, it described a person who had mastered a certain skill and strength but had not yet reached the realm of condensing Heavenly Essence. 7. Ascending to Tianyuan: The highest strength described a person who had reached an extraordinary realm through ascension and other means, possessing unmatched strength and ability. The division of strength levels was not fixed. It might change as the story developed and the characters updated.
The nine levels of demons were as follows: 1. Holy Demon King: Satan; 2. Holy Demon Spirit: Lucifer; 3. [Pears-level Envoys: Diablo, Barr, Mephistos; 4. Edward Wortheley level demon envoy; 5. Minis Special Class Enchanter; 6. Ambershad Level Demon Envoy; 7. Chastrus-level Demon Envoy; 8. Hou Si-level mo weapon; 9. Tervi-level mo weapon.
The levels of strength in fiction often include different aspects. For instance, there's the strength of will. A character with a strong will can persevere through tough times, like Frodo in 'The Lord of the Rings' carrying the ring despite the heavy burden. There's also social strength, where a character has influence over others in the story's society. And magical or supernatural strength, which is common in fantasy stories, like the wizards in 'Harry Potter' with their magical powers.
In the Yuan Venerate, the lower to higher realms were Meridian Unsealing Realm (one to eight meridians) and Energy Cultivation Realm.(early, middle, late stage), Heavenly Pass Realm (early, middle, late stage), Absolute Beginning Realm (First to Ninth Heaven), Divine Mansion Realm (early, middle, late stage), Heavenly Sun Realm (early, middle, late stage), Nascent Soul Realm (early, middle, late stage), Pseudo Dharma Domain Realm (between Nascent Soul Realm and Dharma Domain Realm), Dharma Domain Realm (early, middle, late stage, perfected), Pseudo Saint Realm (between Dharma Domain and Saint), Saint Realm (First Lotus, Second Lotus, Third Lotus), and God Realm.