Dana Icarusia (ダーナ) is the main female protagonist in Ys VIII: Lacrimosa of Dana. A mysterious blue-haired girl who appears in Adol’s dreams.
Dana came from the era of Eternian civilization, an extinct civilization who had lived in the Isle of Seiren. She is considered to be pretty small comparatively to her species despite of her blood as an Eternian. She succeeded the post of Maiden of the Great Tree, a position of the highest order of Eternia's Religion, and serves the Great Tree of Beginnings.

She became one the Protector of Evolution after defeating the Ancient Beast of Mist. However, she later sealed herself at the base of the Great Tree in order to avoid that role, to reawaken in Adol's era, and to stop the Lacrimosa.

In the Epilogue, it was said that Dana's existence was erased from the memories of the Castaways except Adol who wanted to find her. However, in the True Ending, her memories with everyone were recovered thanks to the Earth Goddess Maia. She soon takes over the Great Tree of Beginning and the Providence of Beginning's task and became the new Goddess of Evolution; together with the four Protectors of Evolution as her cohorts.