(I missed this comment, so I am really sorry for the delayed reply!)
He is mixed, I wonder how many breeds lead to this result! The vet told us that he has some Labrador, maybe 10-15%. I was sure that it would have been more because he really looked like a Labrador especially as a puppy. But he is only 20-22 kilos. Funny thing is that many people when they see him think that he is a Labrador puppy, although he is 4 years old, so he gets extra strokes!
Markos never swims in the sea and hates baths, the biggest evidence of small percentage of this breed in his blood :)
Yes, Greek mythology is fabulous, I totally agree!!! As for the names, you made me think that maybe I am a bit weird, I will check this option :)