Tira (ティラ) is a fictional character in the Soulcalibur series of video games. She was created by Namco's Project Soul division. Tira was originally introduced in Soulcalibur III and has returned in Soulcalibur IV, Soulcalibur V and Soulcalibur VI. A mentally unstable young woman, Tira is a former member of an assassination guild, the Bird of Passage, who left the group due to her state, eventually becoming a loyal servant of the cursed sword, Soul Edge, and its wielder, Nightmare. While originally only having a case of split personality, the influence of Soul Edge and its counterpart, Soul Calibur, breaks Tira's mind even further that she currently possesses two different personalities: jolly and gloomy.