This is Pluto, the god of the underworld and the god of wealth. He is also part of the Big Three, with Jupiter and Neptune. Pluto abuducted Proserpina, to become his wife. Pluto is the god who deciders to give punishment or glory for the souls of the dead. The Greek personality of Pluto is called Hades and they are different in personalities, but they share they major myth of abuducting Proserpina ( The Greek counterpart is Persephone)
This is Juno, goddess of the heavens, family, marriage, and childbirth, wife of Jupiter. Together they had two gods Vulcan, god of fire and volcanoes and Mars, god of war. She looked over all the woman of Rome and protected them. The Greek counterpart of Juno is Hera, they are both very warlike despite being the goddess of family, marriage and childbirth .
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There are many more Roman gods, but these are the most important gods and goddess.