The Sphinx was the gaurdian of Thebes in Greek mythology. In answer to your question, no one really 'killed' her, except indirectly. She basically comitted suicide because Oedipus solved her ridlle.
"Which creature in the morning goes on four legs, at mid-day on two, and in the evening upon three, and the more legs it has, the weaker it be?" She strangled and devoured anyone unable to answer. Oedipus solved the riddle by answering: Man-who crawls on all fours as a baby, then walks on two feet as an adult, and then walks with a cane in old age. By some accounts[5] (but much more rarely), there was a second riddle: "There are two sisters: one gives birth to the other and she, in turn, gives birth to the first." The answer is "day and night" (both words are feminine in Greek).
Apollo killed the python in Greek Mythology.
Python was the name of a monster killed by Apollo. Other monsters were killed by Zeus and Hercules.
You need to have more information but yes, there is a great Python in greek mythology. Answer 2: Click link below, then choose 'Python' from menu!
Apollo shot Python with his golden bow.
Bellaphron killed the chimera
Delphi is a Greek city where Gaia sent Python (a huge serpent) to guard the oracle. Apollo laid claim to the shrine and killed Python, apparently to avenge his mother Leto who had been pursued by Python during her pregnancy.
Theusus
In Greek mythology Erebus is not said to have killed anyone.
Theseus killed the minotaur
Theseus did.
A large serpent slain by Apollo. So the term has its roots in Greek mythology.
Theseus in Greek mythology was the hero who killed the Minotaur. He was journeying around Greece and arrived at Crete. There he killed the Minotaur. He is supposed to have been the founder and first king of Athens.
Midas