Sikozu accompanies Crichton as he reunites with his crewmates from Moya, and she gradually allies herself with Scorpius, whom she initially seems intrigued by both because he saves her life and because he is arguably the most powerful and intelligent person on Moya. (He is the first mind Sikozu has known who she acknowledges as her equal or superior.) They eventually become lovers and she takes a place at his side when he is kicked off Moya. Just prior to the Scarran-Peacekeeper war, it is revealed that she is a bioloid (an android) and a double-agent. She is working with the Kalish resistance to free the Kalish from Scarran servitude, and as such was specially bioengineered to be able to hover in the air and release intense radiation heat rays from her body that destroy Scarran heat producing glands, rendering them weak and vulnerable. She is also able to direct this energy in smaller bursts via her hands when necessary. This radiation seems to still be harmful, although to a lesser degree, to Scarran hybrids such as Scorpius. When using her power in his presence, she instructs him to take cover and not to look at her.