Ultimate Skill

Ultimate Skill (究極能力) is the evolved form of Unique Skill and the final evolutionary stage of Skills in general.

Ultimate Skill Characteristics
Ultimate skills, as the name implies, give the wielder ultimate power to control the very laws of nature. The only way to counter an ultimate skill is with another ultimate skill. That is the absolute, unbendable rule of the world. As of the ending of the Web Novel, there are two main general types of Ultimate Skills (Sin Series and Virtue Series), but other Ultimate Skills that don't fit these types exist, such as the Old Gods Series.

Ultimate Skill's List
The seven deadly sins and their correlated Ultimate Skill are as follows:

The Virtue Series, in turn can be seen below:

The Old Gods Series can also be seen below:

Trivia

 * In the story, the characters pronounce Ultimate Skills using only the being they reference and not the entire names used in the wiki and translations. Meaning, it's "Ultimate Skill Beelzebuth" not "Ultimate Skill Gluttonous King Beelzebuth." This is due to the Japanese texts themselves. (See: Furigana and Ruby Characters)