A hybrid is any person whose genes consist of more than one sentient species in the Star Wars universe.
Numerous characters in SWRP have been bred the illegitimate offspring to an odd couple. Canonically, Human species were genetically compatible with Twi'lek, Echani, Miraluka, Ferroan, Nagai, Sith, and the Zabrak. Some incompatible breeding pairs include humans and Bothan, humans and Anzati, and Gotal and H'nemthe. Uncommon crossbreeding often resulted in abnormalities of the offspring's physical or mental characteristics.