Tenra's parents Stell and Mrya Hemmel live on Trill with his younger sister Marcil.  Neither his parents are joined and were against him going through training at the Symbiosis Commission.  They also were not happy that he went the Starfleet Academy either.  Tenra has little contact with his parents these days and hasn't spoken to them since his joining.

Tenra spent the usual four years at Starfleet Academy, leaving with some of the highest marks of that graduating year.  For the next two and a half years, on the recommendation of several of his lecturers, he spent some time at three of the next Science Academies within the UFED.  Most of his time was spent at Cambridge, England, on Earth.

He then contacted Starfleet who agreed to sponsor his time at the Symbiosis Commission and was granted a position within the UFED Embassy on the Trill home world.  During his first six monthly evaluation with his instructor Mikal Hex, their runabout class vessel crash landed on the planet that they had gone to train on.

The automatic distress signal was picked up by the USS Oakland.  On it's arrival at the planet they found Mikal Hex severely injured and close to death and Tenra was unconscious.  The CMO aboard the Oakland contacted Trill and was told that at all cost the symbiont must be saved at all costs.  After only six months training, Tenra was joined with the symbiont Hex.  The unconscious Tenra Hemmel woke up as Tenra Hex.

After seven months on Trill, visit after visit from counselors and psychiatrists he contacted Starfleet about gaining a Science Officer position aboard a starship.  Almost immediately he was offered a post aboard the USS Odysseus-A, based in the Beta Quadrant.  He accepted the post straight away, but a small part of him was not too excited at the posting.

He was promoted shortly thereafter to Lieutenant, completely skipping the Lieutenant Junior Grade rank.  More recently, upon the destruction of the Odysseus and the holographic matrix of Payton Schwartz, he was promoted to Lieutenant Commander and Executive Officer.

Previous Hosts:

First Host - Lenara Hex.

Lenara Hex was married to Casil Trell and were both officers in the Diplomatic Core during the Dominion War of 2394.  Leading up to the devastating effects that the war was having on the Federation at the time, Lenara was posted to Earth and Casil was posted to Betazed.  During the final confrontations, of the battle, he was helping civilians escape but was aboard one of the transports that did not make it out of the Betazed sector.

After the war ended Lenara remained on Earth as an Ambassador for Trill.  She helped with the coordination of the many refugees that been displaced during the war.  Relocation was not easy at that time, with the collapse of the Federation many worlds focused on their own people and resources but some people felt that some things were more important.

Lenara died from natural causes.

Second Host - Mikal Hex

After joining with the Hex symbiont Mikal became an instructor at the Symbiosis Commission.  Mikal kept himself to himself, was quite shy and retiring around people but as an instructor was Hard but fair.