According to the search results provided, it could be concluded that the Demon Encounter King was considered the strongest existence among the Masked Knights. He had the ability to encounter demons, create and destroy time and space, and could use all the powers of ordinary knights. The power of the Demon King controlled the power of all other knights, including the knights of the Heisei Era and the Shōwa Era. Although some people thought that King Shi was also very powerful in his demon form, King Shi was considered the ceiling of the Masked Knights and the strongest existence. Therefore, the answer to the question could be: Yes, the Demon Encounter King was considered the strongest Masked Knight.

Encounter Magic Power was a concept in the Masked Rider series. It was described as a power of creation and destruction. The power of Encounter Magic seemed to be a power that Shogo Tokugawa (the Masked Rider, King Tokugawa) possessed and not obtained through other means. Some people believed that the power of Encountering Demons was a superpower that Shingo possessed, while others believed that the power of Encountering Demons was a combination of Shingo and other knights 'powers. Encounter Magic Power was described as having the ability to freeze time and turn matter into dust. However, the search results did not provide a clear answer to the exact definition and source of the power of encountering demons. Therefore, based on the information provided, I am unable to determine what the Power of Encountering Demons is.
The characters included the male lead, Xu Hao, and all of you are newbies! "Become Strong When You Hit Demons" by White Zebra. It was a fantasy/oriental fantasy novel with system, invincibility, hot-bloodedness, and Liaozhai elements. It was completed and can be enjoyed without worry. User recommendation: "Are ghosts scary? That's because you haven't encountered anything more terrifying!" The young man who loved money and cherished his life believed this and was afraid that a great terror would walk out of the forbidden area and plot against him. For the sake of money and his life, the handsome young man gambled everything and doubled his efforts to improve himself… "You have reached rank-99!!" "Your Tathagata Divine Palm technique is close to Dao!" …… Ten years later, the demon calamity erupted and the black mosquito was revived. It walked out of the forbidden land and suppressed the heavens, causing the empire to be littered with corpses. Just as it was about to devour the entire Great Yan Empire, it met Xu Hao. After a palm technique descended from the sky, Xu Hao was surprised to find that the black mosquitoes in the novice village were just ants! He was the Heaven…the most terrifying existence! I hope you will like this book.
I recommend "Encountering the Demon God's Assist", a classical Xianxia novel. In the story, the heavenly tribulation practitioner, Yao Yue, couldn't survive and fled to the demon world. It was said that there was a time when the demon world encountered demons, which just matched the plot in the question. There were many fantasy elements in the novel. The plot was compact and the story was exciting. I recommend everyone to read it. I hope you like my recommendation. Muah ~
In the web novel, Myriad Ancient Godly Emperor, the strongest demon was Demon God Barr. Demon God Barr was the ancestor of the Barr Clan, one of the 12 Demon God Clans in the Infernal Realm. He was also one of the oldest gods in the Infernal Realm. He had the cultivation of the early stage of the God Realm. He was very powerful. He was one of the top figures in Hell World and had once fought against the organization with Zhang Ruochen. While waiting for the TV series, you can also click on the link below to read the classic original work of " A Record of a Mortal's Journey to Immortality "!
In the strategy of adding points in the Demon King's stronghold, there were advantages and disadvantages for each of the five demons and four demons with one body. The 5-point magic attribute pursued extreme damage output and could display powerful lethality in the mission scene. It was suitable for players who pursued high damage output. However, this method of adding points might face a survival risk during PK due to insufficient defense and HP. The 4 Demons 1 Constitution bonus point method not only ensured a certain amount of damage output, but also increased the character's HP by 1 point, thus increasing the character's survivability. Compared to adding 5 magic points, the damage output was slightly inferior, but it was more advantageous in situations that required a certain amount of survivability. Therefore, the choice of 5 Magic or 4 Magic and 1 Body depended on the player's personal gaming style, game environment preference (whether it was more focused on missions or PK situations), and the balance between damage output and survivability. The novel "Underworld Commander-in-Chief's Bloody World" is equally exciting. Everyone is welcome to click and read it!