Memory Beta, non-canon Star Trek Wiki

A friendly reminder regarding spoilers! At present the expanded Trek universe is in a period of major upheaval with the finale of Year Five, the Coda miniseries and the continuations of Discovery, Picard and Lower Decks; and the premieres of Prodigy and Strange New Worlds, the advent of new eras in Star Trek Online gaming, as well as other post-55th Anniversary publications. Therefore, please be courteous to other users who may not be aware of current developments by using the {{spoiler}}, {{spoilers}} or {{majorspoiler}} tags when adding new information from sources less than six months old. Also, please do not include details in the summary bar when editing pages and do not anticipate making additions relating to sources not yet in release. 'Thank You


Memory Beta, non-canon Star Trek Wiki
Memory Beta, non-canon Star Trek Wiki
For the mirror universe counterpart, see Simon Van Gelder (mirror).
For other uses, see Simon.
See Van Gelder for other articles with titles that contain, either by relationship or by coincidence, this character's surname.

Simon Van Gelder.

Doctor Simon Van Gelder was a respected Human scientist who was assigned to the Tantalus Penal Colony as Dr. Tristan Adams associate in the year 2266.


During Van Gelder's time working with Dr. Adams, the two developed and constructed an experimental device known as the neural neutralizer. The device was designed to be able to rehabilitate a criminal by conditioning their mental responses to stimuli.

However, Adams saw the device as a means to control other individuals and decided to remove the threat of Van Gelder by giving him prolonged exposure to the neutralizer. Fortunately, Van Gelder was able to escape from the colony after hiding himself in a cargo container that was transported aboard the USS Enterprise. However, he was discovered and transported back to the colony, and Dr. Adams convinced Captain James T. Kirk that Van Gelder had exposed himself to the device as a test. While the Enterprise crew initially accepted Adams explanation, Commander Spock and Dr. Leonard McCoy later grew suspicious and performed a mind meld on Van Gelder to learn the truth.

With the truth finally revealed, the Enterprise crew prevented Adams from gaining Captain Kirk under his control, and once Van Gelder was restored to full health, he had the neutralizer destroyed. (TOS episode & Star Trek 1 novelization: Dagger of the Mind)

Van Gelder was still alive in the 24th century and was still living in the Tantalus colony on Tantalus V. He would send items to Adams at the Central Bureau of Rehabilitation in Stockholm via the Planet 10 Shipping company. These cargo items were often routed through Deep Space 9. (Star Trek: Deep Space Nine set decoration; ST reference: The Star Trek Encyclopedia)

This article or section is incomplete
This article is marked as lacking essential detail, and needs attention. Information regarding expansion requirements may be found on the article's talk page. Feel free to edit this page to assist with this expansion.


Appearances and references[]



External link[]