Are any Greek or Roman gods mentioned by name in the Bible?
Also, are any Greek or Roman mythological characters or creatures mentioned in the Bible?
Yes, several different Romans and Greek gods are mentioned. Artemis, Zeus, and Hermes are all Greek gods and Ashteroth was known as Astarte or Aphrodite to the Greeks.
Artemis was also known to the Romans as Diana and Ashteroth was known to them as Venus.
When they heard this they were enraged and were crying out, “Great is Artemis of the Ephesians!” Acts 19:28 ESV
Barnabas they called Zeus, and Paul, Hermes, because he was the chief speaker. Acts 14:12 ESV
After three months we set sail in a ship that had wintered in the island, a ship of Alexandria, with the twin gods as a figurehead. Acts 28:11 ESV [This apparently refers to Castor and Pollux.]
For Solomon went after Ashtoreth the goddess of the Sidonians, and after Milcom the abomination of the Ammonites. 1 Kings 11:5 ESV