Hero/ Villain
Heroes:
Jason: http://www.ancientgreece.com/s/GreekMyths/Jason/; or http://www.pbs.org/mythsandheroes/myths_four_jason.html
Hercules: http://www.ancientgreece.com/s/GreekMyths/Heracles/; and/or https://www.psychologytoday.com/blog/evil-deeds/200910/why-myths-still-matter-hercules-and-his-twelve-healing-labors
Odysseus: http://www.jstor.org/stable/802063?seq=1#page_scan_tab_contents
Theseus: http://www.greekmythology.com/Myths/Heroes/Theseus/theseus.html
Perseus: http://www.greekmythology.com/Myths/Heroes/Perseus/perseus.html
Villains:
Medea: http://www.ancient-literature.com/greece_euripides_medea.html
Circe: http://greece.greekreporter.com/2014/08/24/the-deadliest-femmes-fatales-of-ancient-greek-mythology/#sthash.1RqGfbi2.dpuf and http://mythagora.com/bios/kirke.html
Antigone: http://www.mythindex.com/greek-mythology/A/Antigone.html
Helen: http://www.ancient-origins.net/myths-legends/legend-helen-troy-002076
The Sphinx: http://www.theoi.com/Ther/Sphinx.html