She is the final boss of the game and was one of Professor White's earliest attempts of creating a free-evolving robot can manipulate and assimilate Xels, however, due to poor programming, she began assimilating xels to an alarming degree without a second thought and ended up being decommissioned by Dr. Blackwell who was framed for a terrorist attack when he shut down every robot in America to save them from being infected by Trinity corrupted code. Cherry Dynamics' CEO Gregory Graham however later discovered and reactivated Trinity, where she began quickly assimilating and infecting robots throughout the United States once more, kickstarting the plot of Mighty No. 9. After clashing with Beck at the heart of the malformed Battle Coliseum, she eventually adapted Beck's kind nature and evolved from a berserk gigantic mass of corrupted xels to a demure robot girl. Her appearance is based off Keiji Inafune's "Call F" design proposed for Call.