User blog comment:Vizard6991/Constellations and Themes/@comment-4436931-20160923033110

It's kind of hard to say if Baten Kaitos, Alphard, or Arneb have any influence over the Authority of Gluttony's abilities since all of their abilities are the same except for the abilities and memories of the people they've eaten. Baten Kaitos, in the Arabic batn qaytus, means "belly of the sea monster", which could be a reference to gluttony and the Hakugei. Arneb's Arabic name, arnab, means "hare", which could be a reference to his ability to change his appearance into Ley and possibly Roy

For Regulus, Subaru states that the star Regulus is also known as the Small King or the Lion's Heart. Both are from Latin

Technically Petelgeuse's Unseen Hand is because of al-Jauzā's hand, at least that's what Subaru says it is

Subaru does think of Alphard when he hears Roy's name but Crusch stops his train of thought in order to make him focus on the battle

For Sirius, Subaru states that the star Sirius is known as the "one who burns" and "the one who glows". This stems from the Greek word Seirios. He didn't really think they were related but the former can be connected to Sirius' Fire Control

For Capella, Subaru states that she's a female goat when he's recalling star references, so it's probably more the goat rather than the chariot, but he doesn't link this to anything so I don't know. In my opinion Cappella and Emerada are the same person since death in Re:Zero can easily be faked given magic and abilities. If they were the same person, she could use the Authority of Lust to stay young even though she should be over 50 years old