I remember the mara entering the belly of his disciple. It seems then that it might have been used for beings that enter humans. Those can bring influence to a ordinary person. We see that Sangha also believed Mara can travel until other realms. Similar to Bible. Where the devil talks to “God” on how to treat Job. I have read that in India they used stories alot to teach, so maybe using a name that all knew, was similar to everyone knowing characters in Netflix series.
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