Radzen Tos

**Radzen Tos**, born **Radzen Kuhyzr**, was a male joined Trill engineer, a Starfleet officer, and starship captain who distinguished himself in the early 25th century.

## Biography

### Early Life

Radzen Kuhyzr was born on Trillius Prime in 2367. From a young age, he showed an aptitude for engineering, pulling apart and reassembling almost any device he could get his hands on. Partly to help him to excel where he showed aptitude, and partly to save their household appliances, Radzen’s parents enrolled him the engineering program at Trill Polytech. The boy thrived at the school and found a mentor in one of the teachers, Marida Tos. In his fifth year, Radzen began an apprenticeship under Marida.

### Starfleet Academy

Radzen finished his apprenticeship shortly after his eighteenth birthday and, with the encouragement of Marida and his parents, applied to Starfleet Academy later that year. He spent the next four years studying a variety of subjects, but focused on engineering. It was also during his time at the Academy that Radzen first saw Sherah zh'Priinia, who was finishing her musical tour of the Federation in San Francisco. Sherah was a musical prodigy from Andoria and was skilled in numerous musical instruments and styles. Radzen fell in love with her the moment he saw her play. But zh'Priinia returned to her teaching at the Aldebaran Music Academy and Radzen to his studies, without the two ever having met.

### At the Utopia Planitia Fleet Yards

Fresh out of Starfleet Academy, Radzen was assigned to the Utopia Planitia Fleet Yards. His team there was tasked with finalizing the new *Gryphon*-class, which officially launched in 2390.

A year after his arrival at Utopia Planitia, Radzen received news that his old mentor, Marida, was dying. Taking a short leave, the young Trill officer returned home. He arrived in time to visit with Marida and learn that she wished for him to take her symbiont, Tos. Radzen had never seriously considered becoming a host, but he was assured that he qualified and could be joined if he so wished. He was hesitant at first, but his great respect for Merida Tos and his desire for knowledge led him to agree to host the symbiont. He was joined, shedding his old name and becoming Radzen Tos.

### Aboard the *Tahoma*

After returning to the fleet yards, Tos continued to enjoy his duties for a time. But he eventually became anxious to explore the galaxy. In 2392 he was promoted to lieutenant and transferred to the USS *Tahoma* as second engineer. Radzen was assigned to the night shift and soon became friends with the starship's executive officer, Commander Kashal ch'Priinia, and chief of security, Lieutenant Va'Kel Shon.

During a resupply stop at Betazed, ch'Priinia invited Tos to join him at a musical performance on the planet. The performance was by Kashal's sister, Sherah. Radzen's interest in the musician was rekindled and he was finally introduced to her. The two courted intermittently for three years before finally being wed in late 2396.

### Aboard the *Takarabune*

By that point, Radzen had been promoted to lieutenant commander and was stationed on the USS *Takarabune* as the chief engineer. The starship served as an exploration and ambassadorial vessel. Sherah joined Radzen on the *Takarabune* and performed at many diplomatic functions.

### Instructor at Starfleet Academy

After a few years, Tos accepted a transfer to teach at Starfleet Academy. Sherah performed at various locales in the Sol system and taught music in Singapore. Between semesters in 2402, Radzen took a crash course at the Elite Forces School to obtain Military Assault Command Operations certification. A member of his team, Arkelena Sirko, was a young cadet that greatly impressed Radzen.

The next year, he entered the Starfleet Academy Command School at the recommendation of the the academy's superintendent. Completing coursework alongside much younger students and continuing to instruct engineering classes was stressful, but Radzen managed to complete command school in just 18 months. He was promoted to commander and continued to teach at the academy as tensions rose in the galaxy.

### Field promotion

As tensions rose with the Klingon Empire, Tos was called back to the *Takarabune*, this time as the executive officer under his old friend Kashal ch'Priinia. Due to the nature of the conflict, Sherah did not accompany Radzen. Instead, she took a position at her alma mater on Aldebaran III, which the couple would consider their homeworld for the next two decades.

During a particularly brutal confrontation with Gorn battleships, Kashal was killed and the *Takarabune* was severely damaged. With his dying breath, the Andorian gave Radzen command of the vessel. Due to his ingenuity and valor in rescuing the remaining crew, Starfleet Command promoted the Tril shortly after his return to Earth Spacedock. After completing Federation Diplomatic Corps training, Radzen was given command of the USS *Epyon* and was assigned to Ktarn Fleet.

### Command of the *Gheryzan*

After the development of the *Odyssey*-class cruisers, President Aennik Okeg decided to name a series of the new starships in honor of the member worlds in the United Federation of Planets. Tos was given command of the USS *Gheryzan*, which was named after his homeworld of Trillius Prime. Remembering his teammate from MACO training, Tos offered the position of chief of security to Arkelena Sirko.

Captain Tos and his crew would serve with distinction during the Undine and Iconian Wars. In the latter conflict, the *Gheryzan* was critically damaged and Tos and his crew were given an extended leave at the war's end. That was not the end of the *Gheryzan* however, as it was pegged for an upgrade and overhaul into the new *Yorktown*-class.

After three months of construction, the *Gheryzan* was recommissioned and Captain Tos was once more placed in command.

## Gallery

Sherah and Radzen at the opening of the Federation embassy on New Romulus.Radzen watching the USS *Gheryzan* outside Earth Spacedock.Captain Tos and Commander Lorha consulting on the bridge of the USS *Gheryzan*.
## Chronology

2367
Born Radzen Kuhyzr at Leran Manev, Trillius Prime
2380
Entered Trill Polytech
2385
Entered Starfleet Academy
2389
Graduated from the Academy; assigned to the Utopia Planitia Fleet Yards
2390
Joined with the Tos symbiont
2392
Promoted to lieutenant and assigned to the USS *Tahoma* as second engineer
2396
Promoted to lieutenant commander; assigned to the USS *Takarabune* as chief engineer; wed Sherah zh'Priinia
2400
Began teaching engineering classes at Starfleet Academy
2402
Completed MACO combat engineer certification at the Elite Forces School
2403
Entered the Starfleet Academy Command School
2404
Graduated from command school and promoted to commander; assigned to the USS *Takarabune* as executive officer
2407
Promoted to captain and assigned command of the USS *Epyon*
2409
Assigned command of the USS *Gheryzan*
## Appendices

### Connections

**Assets:** Starbase 247-Vershina • Jatha Dilithium Mine • Noonian Soong Spire • Delta Foundry • Starbase 234-Beskerm • Starbase 39-Sierra

**Components:** Romulan Theater Command • Task Force 200 • Task Force 201 • Task Force 202 • Task Force 203 • Task Force 204

**Leadership:** Commander-in-chief • Joint Chiefs • Chief of Starfleet External Affairs • Chief of Starfleet Operations • Chief of Starfleet Research and Exploration • Chief of Starfleet Tactical

**Agencies:** Operations (Engineering • Judicial • Materiel Supply • Mission Operations • Personnel Management • Records Service • Shipyards Operations • Starbase Operations) • Research & Exploration (Science • Medical) • External Affairs • Tactical (Intelligence • Security • MACO)

**Notable units:** Ktarn Fleet • Task Force 77

**Facilities:** Deep Space K-7 • Deep Space K-13 • Deep Space 9 • Masamichi Array • Starbase 45-Keepsake • Starbase 82-Maat • Starbase 234-Beskerm • Starbase 247-Vershina

**Agencies:** Starfleet • Diplomatic Corps • Department of Temporal Investigations • Federation Security Agency

**Facilities:** 40 Eridani A Starfleet Construction Yards • Antares Ship Yards • Beta Antares Ship Yards • Copernicus Ship Yards • Laikan Starfleet Shipyards • McKinley Station • Memory Project • New Aberdeen Shipyards • Proxima Maintenance Yards • Salazaar Shipyards • San Francisco Fleet Yards • TL-9139 Starfleet Maintenance Yards • Tranquility Base • Utopia Planitia Fleet Yards