A groundbreaking sci-fi series from the mid 90s, Babylon 5 is now streaming on Amazon Prime, where I have revisited this childhood favorite show, the results... are mixed.

No one is really sure what a Xamek is, or if they even exist

Appearing as mutilated humanoids with large heads, Nihilids are terrifying to encounter. They are thankfully rare.

To all space explorers, rogue traders and Federation colonisation and expeditionary force officers!

Thirty new alien species have been discovered. You are well-advised to inform yourselves, as to engage these entities correctly, without risk of harm to yourself or to the interests of Terra.

Ten of the described species are human in origin, yet modified to such a degree that they no longer need to be considered human.

Another ten are civilisation-building aliens competing with Terra for available space.

The final ten entries are remarkable life forms that display sapience, without using it to create civilisations. Caution is advised.

The Glassenheim Foundation is a relict of the Petroleum Era, a technological hold out and a holder of terrible secrets.

A hostile race discovered through dimensional boring. The first encounter with the violent and nomadic Tarxan occurred in Neo-Constantinople of the Eurasian Alliance, hence the Turkish/Central Asian rooted name.

'The perfect pet at the perfect price -- guaranteed.' Creature Dex at the bottom of the sub, if you want to include 'relatively harmless' alien critters in your campaign.

A blue green jewel, Beta Delphini II, home of the turtle like Chelonians. The world is old, and bears many scars, the craters from orbital bombardment and high power explosions, rings of dust and debris that were once starships, habitats, and fighter craft. But the world below remains tranquil, its wounds covered with blue seas and green forests.

A member of the Cynopterid race

Beau yet alien, the soldier-concubines of Aerazad, the Returned King, are a glowing reminder that a new order reigns in Eversea.