
Tanzo Kubo, the currently only known Executor
The Executor is an Angel chosen to cleanse a district. The title used by Tanzo Kubo in NEO: The World Ends with You.
Duties[]
The Executor is an Angel summoned to a given district with the task to create an Inversion. They are able to do this in whatever method they desire so long as they aren't breaking Angel code.
In the case of Kubo, he was tasked with cleansing Shinjuku and later attempted to cleanse Shibuya. He manipulated the Reapers without directly acting himself. In this case, this involved granting Shiba Miyakaze additional powers while persuading him that it was his duty to erase the district, and pulling Rindo Kanade into the Shibuya Underground to indirectly cause the creation of the Soul Pulvis.
It is notable that in both the English and Japanese versions of the game, his title Executor (執行人 Shikkounin) is distinct from - although similar to, in both languages - Executioner (死刑執行人 shikeishikkounin). In other words, the implied "execution" is of orders, not people. It is possible, therefore, that the role of the Executor is to carry out the will of the Angels in all actions and areas where they would not be permitted to directly interfere, not just destruction. Another possibility is that any given Angelic desire has a different Executor, and that Kubo was only the one chosen for this job, possibly because he is a Noise Master.