The following is a list of unnamed Acamarians.
Bodyguard []

Marouk's bodyguard
This bodyguard came aboard the USS Enterprise-D in 2366 to guard Sovereign Marouk. He also accompanied her to Gamma Hromi II and Chorgan's Gatherer ship. (TNG: "The Vengeance Factor")
Brull's sons []
Brull's sons were the male offspring of Gatherer Brull. One of the sons was about the age of Wesley Crusher in 2366 and was not good at mathematics. (TNG: "The Vengeance Factor")
Chorgan's gatherer []

A gatherer
This Gatherer worked for his leader Chorgan on his ship. He was present during the peace talks between Chorgan and Sovereign Marouk and was stunned by Commander Riker who stopped Yuta in killing Chorgan. (TNG: "The Vengeance Factor")
Database photo []

Five Acamarians in 2313
Three civilians and two guards were seen on a picture in the Acamarian planetary database. This picture was shot in 2313, during the trial of Penthor-Mul and helped identify Yuta as the murderer. (TNG: "The Vengeance Factor")
Gatherers []
These four Gatherers were members of the clan on Gamma Hromi II along with Brull, Mallon, Temarek, and Volnoth.
In 2366 they fired with Regalian phaser rifles at the away team of the Enterprise-D. Later they were present when Sovereign Marouk joined the Gatherers at the campfire to talk about peace. (TNG: "The Vengeance Factor")
Maid []

Marouk's maid
This maid came aboard the Enterprise-D in 2366 to serve Sovereign Marouk. She was one of two servants to Marouk along with Yuta. She brought the personal belongings into the quarters aboard the Enterprise-D. (TNG: "The Vengeance Factor")
Starbase 80 residents []
By 2382, Starbase 80 had the highest off-world Acamarian population due to a botched treaty ceding half of the station to the Acamarian government. The vast majority, if not all, of Starbase 80's Acamarian population was comprised of Gatherers. (LD: "Starbase 80?!")
Tralesta clan members []
Along with Yuta, four members of the clan Tralesta survived the Tralesta Massacre, the others being murdered. (TNG: "The Vengeance Factor")