Warning: This Article Has SPOILERS for Star Trek: Discovery Season 5

Summary

• Meet Hy'Rell, the Efrosian librarian in Star Trek: Discovery Season 5, Episode 8, "Labyrinths".
• The Breen are after ancient power to create life, putting Discovery in danger.
• Efrosians were last seen in the movies Star Trek IV and Star Trek VI.

Star Trek: Discovery season 5, episode 8, "Labyrinths" introduces Hy'Rell (Elena Juatco), who hails from an alien species last seen in the movies Star Trek IV: The Voyage Home and Star Trek VI: The Undiscovered Country. Written by Lauren Wilkinson and Eric J. Robbins and directed by Emmanuel Osei-Kuffour, "Labyrinths" brings Captain Michael Burnham (Sonequa Martin-Green) and the USS Discovery to the Eternal Gallery and Archive for the final clue to the Progenitors' treasure. However, the Breen, guided by Moll (Eve Harlow), are hot on Discovery's trail and want the ancient power to create life.

On X, Jörg Hillebrand (@gaghyogi49), who was a renowned researcher for Star Trek: Picard season 3, posted about Hy'Rell in Star Trek: Discovery season 5, episode 8, "Labyrinths", identifying the alien librarian and guide as an Efrosian. Hy'Rell has the same ridges on her brows and hairstyle as previous Efrosians seen in Star Trek IV and Star Trek VI. Check out Hillebrand's post below:

As verified by Memory Alpha, an Efrosian helmsman played by Nick Ramus appeared on the USS Saratoga in Star Trek IV: The Voyage Home and Kurtwood Smith played the Federation President in Star Trek VI: The Undiscovered Country.

Check out a preview of Star Trek: Discovery season 5, episode 8, "Labyrinths" from The Ready Room hosted by Wil Wheaton below:

Star Trek: Discovery Season 5 Brought Back Many Classic Aliens

Discovery has more callbacks to Star Trek lore

The Efrosian Hy'Rell joins an exciting list of classic Star Trek aliens appearing in Star Trek: Discovery season 5. Two of Star Trek: Discovery season 5's new major characters hail from species known from Star Trek: Deep Space Nine. Commander Rayner (Callum Keith Rennie) is a Kellerun while L'ak (Elias Toufexis) is Breen who made history as the first of his species to remove his helmet and have a three-dimensional character. Other DS9 species seen in Star Trek: Discovery season 5 include the Ferengi bartender and his Lurian barfly in the USS Discovery's bar.

Star Trek: Discovery's 32nd century feels more like Star Trek than ever before.

Star Trek: Discovery season 5 is a sequel to Star Trek: The Next Generation's "The Chase", which introduced the ancient humanoids who seeded the galaxy with life. In Star Trek: Discovery's 32nd century, the ancient humanoids are called the Progenitors, and the scientists who found the Progenitors' treasure include a Trill, a Romulan, a Betazoid, and a Denobulan. Star Trek: Discovery season 5's premiere also introduced Fred (J. Adam Brown), a Soong-type android similar to Data (Brent Spiner). With the new addition of an Efrosian, Star Trek: Discovery's 32nd century feels more like Star Trek than ever before.

Source: X, Memory Alpha

New episodes of Star Trek: Discovery season 5 stream Thursdays on Paramount+