Fuau Lilith is the sole surviving fairy from Planet Koam in the Pentagona System. Her species was eradicated in a human genocide, leaving her deeply traumatized and initially communicating only through gestures due to profound shyness and fear. Gradually overcoming this trauma, she began speaking normally after joining Daba Myroad's group. Traveling alongside Daba Myroad, she frequently accompanies him in the L-Gaim's cockpit. Though not primarily a fighter and preferring quiet, Lilith reveals a fiery personality when provoked or defending her friends. Her presence embodies the plight of races persecuted by the Poseidal Empire. She forms close bonds within the group, especially with Daba, and experiences moments of vulnerability like visible embarrassment when her clothing is accidentally destroyed. Her background and connection to Koam are explored in episodes such as "Lilith Memory" (Episode 45). By the series' conclusion, she remains with Daba and his companions, departing with them to care for Olibee, solidifying her role as a steadfast companion tied to the core group until their journey's end.