https://www.looper.com/1502463/star-trek-first-redshirt-death-lee-kelso/

The original "Star Trek" gave us redshirts - side characters whose purpose is to die and raise the stakes. Who was the first one? The answer isn't so simple.

Star Trek's Redshirt Death Trope Explained (https://www.looper.com/1514203/star-trek-redshirt-death-trope-explained/)

In the early days of "Star Trek," wearing red seemed to greatly increase one's chance of death, but redshirts might not have been as cursed as fans think.