[pirateking]

Where do you think saten is now? He wasnt at the villains council meeting. The hat guy (is his name really Hatfield) was instead

Spoiler:

In volume 8, it was mentioned that he was sent to hunt down potential new Needless members for Simeon based on "the list" stored on the data inside the pendant which Aruka took from Cruz. What was inside "the list" was not explained but Aruka said the list of names were "special". So he was pretty much going around doing errands for Simeon while the others take care of Arclight's healing.

That data was the reason for Simeon to hunt down Cruz and put out wanted posters for him in chapter 64 because Simeon believed the other half of the data containing the decryption codes were with Cruz. (It was revealed the data Aruka stole from Cruz in vol 7 is only half of the data)