The name Ken in Chinese / Japanese...

ケン is the name Ken in Japanese.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

肯 is the name Ken in Chinese (Mandarin).

合気剣 is Aiki-Ken, a style of Japanese sword technique.

気剣体一致 is the title Ki Ken-Tai Icchi.

気 = energy, 剣 = sword, 体 = body, 一致 = synchronization/unity. So, “energy, sword, and body in unison” would be one way to translate this. Sometimes written with the possessive article, の, making it 気剣体の一致 or “Ki Ken-Tai no Icchi.” Let me know in the special instructions if you want that の character added by the calligrapher.

君子の拳 is “Kunshi no Ken” in Japanese.

The meaning is literally “Noble Fist” or “Fist of Nobility” but it's often used to describe the effort to concentrate on cultivating oneself to become a well-rounded, respectful individual.

You will see 君子の拳 sometimes written in the full Kanji form of 君子之拳. Both versions mean the same thing. If you want this more traditional Kanji version, just let me know when you place your order.

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.

拳禪一如 is a Japanese phrase that is often translated as “train both body and spirit.”

Here's the breakdown of the words in this phrase:
拳 means fist.
禅 is zen, which means meditation.
一如 is a word that means “to be just like,” “oneness,” “true nature,” or “true character.”

So to get to the translation of “train both body and spirit,” you must understand that “fist” is representing “body” and the idea of meditation is representing “mind.”

I have to say, this is not how I would translate this. To me, it's really about training with your mind and remembering that meditation is a huge part of training, not just your fist. As the Shaolin Buddhist monks show us, meditation is just as important as physical training in martial arts.