Do you need it for every object or just the character? -> because when it’s just the character, I personally would do it like it was suggested in the other threads (so in the material with a wave effect + with the sphere mask node) -> easiest way 
Do you need it for every object or just the character? -> because when it’s just the character, I personally would do it like it was suggested in the other threads (so in the material with a wave effect + with the sphere mask node) -> easiest way