Daphna was an female alien who worked at the farm of Rick in the Warmonger Rick Dimension. When she led a revolution against Rick, Morty prevented her from shooting him, leading her to be speared on a pitchfork.
Daphna grew up in a war torn dimension during The Great Struggle; a war which Rick started in order to recruit cheap labor from the inhabitants of the dimension to meet the new demands for food in the post-war world. Losing her parents and siblings in the war, she grew to hate Rick and wish for his death. After the war, she started working at Rick's farm along with the remainder of her tribe.
She met Morty shortly after he was fetched by Rick to infiltrate the revolutionaries and feed him information. After his first day in the field, she invited him to their cabin to drink and socialize. She would then take him to an old warehouse and show him the relics from the great war. She finally convinced Morty that Rick was the enemy by showing him an old propaganda poster of Rick from the war. She led the revolution the next night, but when she aimed to shoot Rick, Morty shoved her in order for her to miss. Accidentally, he shoved her onto a pitchfork, where he left her bleeding and dying on the ground. The Rick in that dimension died from the gunshot wound and the revolution continued.