The name Indra in Chinese / Japanese...

因陀羅 is the name Indra in Chinese (Mandarin).

インドラ is the name Indra in Japanese (Katakana).

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

天龍 can mean Heavenly Dragon (Dragon of Heaven), Sky Dragon, Holy Dragon, Celestial Dragon, or Divine Dragon.

This can be a given name in both China and Japan (天龍 is pronounced Tenryū and sometimes written 天竜 in Japanese).

In an older Buddhist context, this can refer to Brahma, Indra, and the devas, together with the nāgas. It can also refer to celestials and snake spirits.

法輪 is the Chinese, Japanese Kanji, and old Korean Hanja title, “The Eternal Wheel of Life,” in Buddhism.

Also known as the wheel of the law, or Buddha-truth, which can crush all evil and all opposition. It is likened to Indra's wheel, which rolls on from man-to-man, place-to-place, age-to-age.

Colloquially used in some sects to mean preaching or spreading Buddha-truth.

金剛 can translate as adamantine from Chinese, Japanese, and old Korean.

Other meanings and translations can include diamond, thunderbolt, Indra's indestructible weapon, a Buddhist symbol of the indestructible truth, Vajra (a mythical weapon), guardian deity, hardness, indestructibility, power, the least frangible of minerals.

The Chinese pronunciation of “Jīn Gāng” became the loanword used in English as “King Kong.” You can see King Kong as the indestructible ape guardian deity depending on how you read the story.

This demon title comes from the ancient Sanskrit word Asura.

阿修羅 is often used in Buddhism when describing various demons. Sometimes defined as “Fighting and battling a giant demon.”

In the context of Buddhism: This title originally meant a spirit, spirits, or even the gods (perhaps before 1700 years ago). It now generally indicates titanic demons, enemies of the gods, with whom, especially Indra, they wage constant war. They are defined as “not devas,” “ugly,” and “without wine.” There are four classes of asuras, separated according to their manner of rebirth. They can be egg-born, womb-born, transformation-born, and spawn- or water-born. Their abode is in the ocean, north of Sumeru but certain of the weaker dwell in a western mountain cave. They have realms, rulers, and palaces, as have the devas.

In terms of power, Asuras rank above humans but below most other deities. They live near the coastal foot of Mount Sumeru (on the northern side). Their domain is partially or wholly in the ocean.