Ken Chinese in Chinese...

肯 is the name Ken in Chinese (Mandarin).

界王拳 is the name Kaioken in Japanese. The meaning is World King Fist. This title is associated with Dragon Ball Z.

This can be pronounced in Chinese, but would only be recognized by Chinese fans of Dragon Ball Z.

This is Kaiōken in Japanese.

界 = Community, circles, world, border, or boundary.
王 = King
拳 = Fist

Often translated as World Lord Fist, Fist of the World King, Kamajamaja (Norwegian), and Leptonski Udarac (Slovenian).

Associated with Goku's attack technique in Dragon Ball Z.

This can be the Chinese ancient surname Gan or current surname Qian. In Japanese, it can be the surname Nukui, Susumu, Ken, Kan, Kawaki, Kawai, Inute, or Inui.

The meaning of this character varies a lot depending on context. These meanings include dry, clean, foster, adoptive, heaven, male, masculine, enduring, or continual.

The “Gan” version of this character was converted to Simplified Chinese as 干 in 1965. However, the “Qian” pronunciation is not associated with 干. Though to add to the confusion, there is an unrelated Simplified Chinese character 千 that romanizes as “Qian” and is also a surname.

剣聖 can be translated as “Sword Saint,” “God of the Sword,” or “Saint of the Sword.” This is an ancient Japanese title bestowed on a master with the greatest of skills in swordsmanship.

Keep in mind that this is an antiquated term. It will only be understood in the context of martial arts. The pronunciation “kensei” also applies to other words like “constitutional government” and power (these words have different kanji and are completely unrelated).

Notes: This is sometimes Romanized as “kensei,” “ken sei,” and incorrectly as “Kensai.”

Chinese Note: This title is pronounceable in Chinese but seldom, if ever, used in Chinese. Also, the first character is an alternate character form for a sword, currently only used in Japan.

阮 is the original Chinese character that represented the Vietnamese surname Nguyễn before Vietnam stopped using Chinese characters and romanized their language. It is probably the most common surname in all of Vietnam. While romanized as Nguyen, it sounds more like the English word “Win” or “When.” 阮 can also represent the Nguyen Dynasty in Vietnam, which lasted from 1802 to 1945.

阮 is also the Chinese surname Ruan, most Chinese with this surname have ancestors from a small state named Ruan during the Shang Dynasty (1600-1046 BC) located in the southeast of modern-day Gansu Province.

In Japanese, this can be the rare surnames pronounced Min, Gen, Ken, Gan, or En.

Besides a surname, this character also represents an ancient musical instrument.