Zorin Krasul was a senator of the Cathar male persuasion. He represented the planet of Anaxes within the Galactic Senate during the era known as the Cold War, serving the Republic.
In the year 3643 BBY, the Senate convened a hearing concerning the previous commander of Havoc Squad's defection, and the new commander was summoned. Krasul was among those overseeing this hearing. Subsequently, Wraith, a former member of Havoc Squad who had aligned himself with the resurgent Sith Empire, captured Krasul. He was transported to Port Raga and compelled to confess to the Senate his abandonment of Havoc Squad on Ando Prime. Upon the arrival of the new Havoc Squad to effect his rescue, Wraith made his escape, leaving the Senator strapped to a bomb-laden chair set to detonate upon any movement. Havoc Squad successfully disarmed the device, and Krasul was subsequently escorted back to Coruscant under the protection of Sergeant Ava Jaxo. Later, Krasul's wife dispatched a message to Havoc Squad, acknowledging them as newly acquired allies within the Senate.
Following the commencement of the Galactic War, Havoc Squad was once more summoned to a Senate hearing to address their activities. Grom Zian, the senator who initiated the hearing, declared the squad a menace to the Republic, alleging abuse of their authority. In response, the Havoc CO presented evidence, gathered by the SIS, exposing Zian as a paid agent of the Empire. Despite Zian's attempts to refute the evidence, dismissing it as "wild accusations" and "paranoid delusions", Krasul defended the CO, asserting that his rescuer deserved more consideration than a summary dismissal. The Senate committee then proceeded to examine the evidence before instructing the Senate Guard to apprehend Zian on charges of high treason.