That's not to say I don't like the set, I do, and will probably play them more than some of my Marvel or DC, not to mention they're great for RPG miniatures.

The Romulans were a humanoid race from the planet Romulus. The Romulans were biological cousins of Vulcans, descended from those who rejected Surak's reforms during the Time of Awakening. The Romulan Star Empire was the Romulan polity and one of the major powers in the galaxy by the 24th century.
This figure is based on Taris, the commanding officer of the Romulan warbird Haakona.

https://memory-alpha.fandom.com/wiki/Romulan
https://memory-alpha.fandom.com/wiki/Taris

This figure is based on Alynna Nechayev. Nechayev was a significant figure in Starfleet's dealings with the Cardassian Union and a fierce advocate of Federation security. She was Captain Jean-Luc Picard's direct superior.


https://memory-alpha.fandom.com/wiki/Alynna_Nechayev

TNG appearances
"Chain of Command, Part I"
"Descent"
"Journey's End"
"Preemptive Strike"

The Ferengi were a warp-capable humanoid species from the planet Ferenginar. Ferengi civilization was built on free enterprise, where earning profit was the sole meaningful goal in life, superseding all other endeavours.  The early Ferengi encountered were animalistic, but they slowly developed as the series went on.

https://memory-alpha.fandom.com/wiki/Ferengi

The Ferengi have made many appearances in The Next Generation, starting with "The Last Outpost" (Season One).

Commander Sela was a military officer in the Romulan military, and an extremely important figure in the Empire's covert attempts to destabilize both the Federation and the Klingon Empire. She was the product of a union between Starfleet officer Tasha Yar's counterpart from an alternate timeline and a Romulan general.

https://memory-alpha.fandom.com/wiki/Sela

Duras, son of Ja'rod, and leader of the House of Duras, was a powerful and ambitious political figure in the Klingon Empire during the late 24th century. He and his family gained notoriety for their use of dishonorable and sometimes treasonous tactics in order to accumulate and maintain power, which culminated in the Klingon Civil War of 2367-2368.

https://memory-alpha.fandom.com/wiki/Duras,_son_of_Ja'rod

TNG appearances
"Sins of the Father"
"Reunion"

Armus was a malevolent entity created by the former natives of Vagra II.
Armus manifested as a slick of black viscous liquid that could also assume a vaguely humanoid shape.

TNG: "Skin of Evil"

https://memory-alpha.fandom.com/wiki/Armus

Professor James Moriarty was a hologram created by Geordi La Forge, based on the fictional character of the same name. He was created for Sherlock Holmes Program 3A as an adversary capable of outwitting Data.

TNG appearances
"Elementary, Dear Data"
"Ship in a Bottle"

https://memory-alpha.fandom.com/wiki/James_Moriarty_(hologram)