Remless

The Lemures (レムレス), also simply known as the Remless, are freakish and evil monsters that also made up the rest of the Dead Moon Circus and they were used by both the Amazon Trio and Amazoness Quartet during combat against the Sailor Scouts, though their nature was quite different in the anime than in the manga. In the English dub, they were referred to as "Remless"; though the name change was never explained, fans speculate that it could be a reference to their lack of dreams, as dreams come during REM sleep.

In the anime, when Queen Nehellenia devoured the Dream Mirrors of her subjects in order to remain young, they became the distorted creatures known as Lemures. When they were defeated with Sailor Moon's attack Moon Gorgeous Meditation, they would cry the words, "Stage out!", whereupon Lemures under the control of the Amazon Trio would fade away and those under the control of the Amazoness Quartet shattered, allowing their target's Dream Mirror to return.

In the manga, however, they were dark, formless creatures, similar to the lemures of Roman mythology.

Anime
Unlike most monsters (with the exception of Eugeal' Daimons), they are never directly involved in an evil plan to gather energy, take over crystal points, extract Pure Hearts, etc. The looking into the Dream Mirrors is done by their masters, and they are merely summoned to fight the Sailor Senshi whenever they try to interfere. They are summoned from shadow. All of them were destroyed by Sailor Moon's Moon Gorgeous Meditation except Karakuriko and Danko, who were destroyed by Sailor Moon's Super Moon Target, which is the preliminary attack for Moon Gorgeous Meditation before her transformation power is upgraded by Pegasus.

Lemures often have appearances of things that would appear in a circus, like clowns, jugglers, or even balloons. As the show progresses, the Lemures get more and more goofy, as pointed out by Sailor Moon and Sailor Chibi Moon during the fight with Ponko. The ones who resemble balloons seem to be related to each other.

The Lemures sent by the Amazoness Quartet usually have repeated words in their names (like Garagara and Kerokero), and eat the dream mirrors once they are extracted, usually through an extra mouth on their chest. The mirror would be released unharmed whenever Sailor Moon destroyed them. Unlike the Amazon Trio's lemures, the Amazoness Quartet's lemures shattered into pieces violently, while the Trio's lemures cracked into pieces and disapeared.

It is ultimately revealed that they are the "living ghosts" of the people of Queen Nehelenia, whose dream mirrors were taken by her. They were given to her seemingly willing, but it is unlikely they knew the cost allowing this. This is strongly hinted in their English name, "remless": 'rem' as in REM sleep, the state of sleep a person dreams, and 'less' meaning of course without.

Manga
In the Sailor Moon manga, most Lemures were small, dark, formless creatures which attacked in large groups.

Trivia

 * The Lemures seen at the Dead Moon Circus Tent are always different from the ones chosen to fight the Sailor Scouts.
 * In the musical Sailor Moon SuperS - Yume Senshi - Ai - Eien ni..., its revision, and the Sailor Moon SuperS Special Musical Show, there were a number of unnamed Lemures who helped the Amazon Trio.
 * In Yume Senshi and its revision, there were also two clown-like Lemures called Pierrot. Many Pierrot later appeared in Shin Densetsu Kourin.
 * In Shin Densetsu Kourin, there were three similar characters called Dark Moon, Lemures, and Nightmare.
 * In Pioneer's DVD box set of the anime, Lemures were still referred to as "Remless" in the subtitles.
 * In the German dub, the Lemures did not say anything when they were defeated, instead just giving a wordless scream.
 * In the French dub, the Lemures were called "Créatures du Chapiteau" (Circus Tent Creatures).