Lon Suder Lon Suder was a male Betazoid in the 24th century . He became a member of the Maquis and later a crewman aboard the during its time in the Delta Quadrant . Suder suffered from unusually strong violent tendencies for most of his life . He had tried a number of treatment options for his condition including violent holographic program s and targeted synaptic therapy . Neither of these were successful , so he did his best to control himself on his own . In 2370 , he saw an opportunity to provide an outlet for his urges in the Maquis , and joined them even though his homeworld was not under threat . He worked under Chakotay and was an effective member of the Maquis , although he did not engender much affection from his colleagues . They regarded him as too efficient when killing Cardassian s and this made them uncomfortable around him . In fact , Chakotay had to hold him back in excessive situations , an action that almost caused himself harm . He was with Chakotay ' s team on the " Val Jean " in 2371 when the " Voyager " was lost in the Delta Quadrant , and joined the crew along with the rest despite his dislike of Starfleet . He would spend the next ten months without an outlet for his violence , serving under Lieutenant B ' Elanna Torres . He had an increasingly difficult time controlling his violence , and , in 2372 , killed Crewman Frank Darwin with a coil spanner and hid the body . He had no motivation for killing him , and did not know him . A brief investigation by Tuvok uncovered his crime , but Tuvok wanted to have a more convincing motive . Suder agreed to a Vulcan mind meld with him , with the aim of helping him to control his impulses . While this proved to be somewhat effective for Suder , the resulting trauma to the Vulcan ' s emotional systems resulted in him losing some of his own control , becoming dangerous and violent . Tuvok tried to execute Suder for his crime , an action which Suder genuinely agreed with , but he was not able to let himself do it due to the treatment he was receiving . Instead , Tuvok collapsed and Suder instead alerted the crew . Because of the lack of punishment or rehabilitative options , he was put under house arrest in his quarters . ( ) Over the next few months , Suder worked with Tuvok to learn how to maintain his self - control . Additionally , he began to find enjoyment in other activities . Under Tuvok ' s guidance , he began to learn about Orchid breeding and eventually became proficient at genetic manipulation of plants . He wanted to use these talents to contribute to the ship in a positive way by increasing the output of the ship ' s airponics bay . Captain Janeway , however , was unsure about allowing him more privileges . ( ) This progress came to a halt when Kazon - Nistrim agent Jal Tierna detonated a biological explosive on " Voyager " . The explosion took place adjacent to Suder ' s quarters and the Betazoid was believed killed . While the ship was taken over by the Kazon , Suder hid in an access conduit and managed to make it to sickbay where he found The Doctor , who was already planning to retake the ship when Suder arrived . During their sabotage efforts , Suder was forced to kill a Kazon soldier . Despite The Doctor ' s assurances that he had done the right thing , he succumbed to a panic attack as he had been working so hard to avoid his violent impulses . Suder was instrumental in helping the crew retake " Voyager " from Seska and the Kazon . After The Doctor was deactivated by Seska , Suder was left alone to disable the backup phaser couplings , but was slightly comforted by a message The Doctor had left him , in which he assured Suder that he had The Doctor ' s complete confidence ; Suder had already shown great loyalty and dedication to his crew . With this in mind , Suder was able to sneak into engineering and launch a surprise attack , killing eleven Kazon soldiers single - handedly . After killing the Kazon that were holding engineering , he was able to sabotage the backup phaser coil , causing it to explode when it was activated ( Tom Paris having disabled the primary couplings ) . He was killed by a Kazon soldier in the process . Thanks to Suder ' s bravery , " Voyager " was able to be retaken , making it possible for the entire crew to continue on their journey back home to the Alpha Quadrant . After the crew were back on " Voyager " , Tuvok spoke briefly over Suder ' s body after The Doctor and Paris had told him of Suder ' s heroism , offering him a Vulcan prayer wishing that , in death , Suder would find the peace that he could never achieve in life . ( ) He would later be named on a list of telepath ic casualties Devore Commander Kashyk confronted Captain Janeway about in 2375 . He was the only member of the list actually dead , the rest hiding in transporter suspension . Janeway explained to Kashyk that Suder died in a " conflict with a species called the Kazon . " ( )