Haba was a male person originating from the planet of Rei'izu. During his youth, the Sith forces invaded and took control of his homeworld, leading to his forced recruitment as a soldier in the Sith rebellion. He found himself among a squad of ten newly drafted individuals, which also included Ekiya, Kabeji, Sae, Shogo, and Unsuke. A single week following their departure from their home, the chief of the rebellion – the Dark Lord of the Sith, eventually to be known as the Ronin – turned against his Sith allies. With the rebellion's downfall, Rei'izu was mysteriously destroyed, leaving only a void of space in its place. The Sith officer in charge of Haba and his fellow soldiers commanded them to mount a final defense against the Jedi and the Empire. However, they instead plotted to kill their superior, aiming to secure their freedom. Their plan succeeded, though only six members of the group lived through the revolt.
Subsequently, he and Sae became romantically involved and were instrumental in establishing an autonomous communications network.