> Well Zeus certainly travelled a lot to get all those people pregnant lmao.
True, however it is not like he had no home: Olympus is his home. And the old man tells that he has no place to call home. If he's telling the truth of course. :) I understand, that it can be Zeus, especially with the talk about his abusive father. Cronus is known for eating his kids. :) But I'm just arguing for the sake of providing another viewpoint. ;)
> On another note, it's a very minor detail but after your talk with the old man you exit the cafeteria and there is only a single person in the station. We don't get any details about this person other than he smokes, Jean (Hermes) is also shown to smoke when meeting Luke.
Yet again true, but how can we know that the old man is still in the cafe after we exit it. :) Hermes is already known to be able to transfer himself instantly to different locations: on the opening night he did it twice, first time in the lounge, and second time when he teleported from the infirmary. Maybe he can change disguise that easily too.
> I think the idea is that Zeus is pretty out of it, and by chapter 18 Hermes is also a bit depented.
Yes. However isn't it a bit quick for Hermes? He was perfectly normal, strong and fast-witted, when he gave MC his cellphone to type the phone number. Such quick degradation (weeks or days, when he lived hundred of years) should be due to some outside influence.