Demeter: Δημητηρ
In Greek capital letters, Heracles is spelled as ΗΡΑΚΛΗΣ.
In Greek capital letters, "Stavros" is spelled as ΣΤΑΥΡΟΣ.
In Greek uppercase letters, "agape" is spelled as ΑΓΑΠΗ.
Ͱερμης
The Greek word for "Hercules" is "Ηρακλής".
Ͱηρακλης = Herakles
Ἥρα = heera
Elies.
Those letters spell cannibal and have nothing to do with Greek mythology.
Cronus and Rhea
In Greek letters, "yiayia" is spelled γιαγιά. It means "grandmother" in Greek and is a term of endearment used for one's grandmother.
Απόλλων : Apóllo̱n