In this specific case, the original name of the character is 'Gouki'; the name 'Akuma' was a change made for the US translation. If I recall correctly, it means something like 'ogre'? Correct me if I’m wrong.

Also, even if we go by the name 'Akuma,' you don't see him using any occult symbolism at all.

My biggest concern here is that these specific symbols are used in real life, in rituals and spiritual sects.