- Full Name: D'ona Helron
- Race: Trill
- Date of Birth: 236709.16
- Place of Birth: Trill
- Age: 21 Terran years
- Gender: Female
- Telepathic status: 0 Telepathic/Empathic Scale
Petty Officer 2nd Class D’ona Helron, is the USS Discovery-C's Electronic Warfare technician and all around technical genius Helron is a Trill and has the vast knowledge from her previous lives. Each of the previous hosts was either an intelligence officer or an EW tech. D'ona Helron is an expert in designing, repairing, and configuring every piece of Intelligence collection gear and computer systems.
Helron died of a man made plague on the mission Zero Tolerance, the Helron symbiont was passed to Fenna Fax.