Ͱερμης
The Greek word for "Hercules" is "Ηρακλής".
Demeter: Δημητηρ
Ἥρα = heera
Elies.
Ͱηρακλης = Herakles
Those letters spell cannibal and have nothing to do with Greek mythology.
Απόλλων : Apóllo̱n
Η Ελλάδα είδη
The letters PFITH can spell a few short words in English : I if it hi hip tip fit hit pit pi phi (Greek letters) pith
Nike is a Greek Goddess.
No, the Greek goddess Nike does not have a constellation named after her. Nike is the goddess of victory in Greek mythology, but there is no constellation associated with her specifically.