The Name Guan Yu in Japanese/Chinese on a Custom-Made Wall Scroll.

關羽 is the name Guan Yu, Army General for the Kingdom of Shu.

He is also known as Guan Gong (like saying Duke Guan or Sir Guan)

He was immortalized in the novel, “Romance of the Three Kingdoms.”

He was a fearsome fighter, also famous for his virtue and loyalty. He is worshiped by some modern-day soldiers and has the title “Warrior Saint” in China. Some believe he offers safety and protection for military servicemen.

Guan Yu lived until 219 A.D.

觀音/観音 is the Buddhist deity known as the Goddess of Mercy or Bodhisattva of Compassion.

In Chinese, the proper name of this being is Guan Yin. There is some debate as to whether Guan Yin is female. The argument comes from some scripture that suggests Buddhist deities take on the male form. Others say that Guan Yin has no sex. And still, others are okay with the female representation of Guan Yin.

This bodhisattva is also known or Romanized in the following ways:
Mandarin Chinese: Guan Yin, Kuan Yin, Kwan Yin.
Japanese: Kannon, Kwannon.
Sanskrit: Bodhisattva Avalokitesvara.
Korean: Gwan-eum.
Vietnamese: Quan Âm.
Thai: Kuan Eim.
English: Bodhisattva of Mercy and Salvation, Goddess of Compassion, Buddha of Mercy, et al.

Note: The first character has a slight variation in Japanese. If your audience is specifically Japanese, you may want to select that version.

See Also:  Buddhism | Goddess | Namo Amitabha | Bodhisattva

關 is a surname in three languages.
In Chinese, it romanizes as Guan.
In Korean, it's Kwan (or Gwan).
In Japanese it's Seki.

The meaning of the character is mountain pass; to close; to shut; to turn off; barrier; frontier.

關公 is a Chinese title, Guan Gong, that means Lord Guan (The warrior saint of ancient China).

While his real name was Guan Yu / 關羽, he is commonly known by the title of Guan Gong (關公).

Some Chinese soldiers still pray to Guan Gong for protection. They would especially do this before going into battle. Statues of Guan Gong are seen throughout China.

觀世音 is an alternate title for Guanyin, the Bodhisattva of Compassion or Goddess of Mercy.

觀世音 is the Buddhist bestower of children, the protector of life and all in distress (especially of those at sea).