Rem

Rem (レム, Remu) is one of the secondary characters of Isekai Quartet.

Appearance
Rem has medium length sky blue hair that covers her right eye, large light blue eyes, and young features. She also has hair clips towards the left side of her hair, a flower-shaped ribbon on the same side of her hair, and a maid hairband. She looks nearly identical to her sister apart from her hair, eyes, and ribbon coloring. She usually wears a maid uniform.

Personality
A sweet maid that follows Subaru having a love for him that even Albedo approves. She is outspoken and honest, and praises her sister even if she does nothing. She wishes to protect Subaru even if it means hurting someone.

Powers & Abilities
Rem can run at high speeds and effortlessly carry Subaru,

Ram
A long time ago before the events of Isekai Quartet, Rem felt inferior when compared to Ram. Nevertheless, she still loved and cared for her sister. One night, Rem was horrified to see the witch's cult cut off Ram's horn after the cult massacred her village including the twins' parents before Roswaal took them in. Rem worked very hard in catching up to Ram, but had been feeling in sufficient. During the demon beast incident, Ram unsuccessfully carried Rem to safety while Subaru kept the demon beasts busy as Rem intentionally made the both of them fell over. After Roswaal eliminated the demon beasts and Subaru rested to recuperate, the boy noted that Rem would never be a substitute for Ram.

Some time after ending up in the new world, the twins adapted into being school students while Roswaal became Class 2's homeroom teacher.

One day, Rem chose "salt and pepper" to follow her sister instead of "mayo" like Subaru. During dodge ball game, the twins made a combo magic move. However, Mr. Rerugen declared it illegal.

Subaru
She has a massive crush on Subaru.

Shalltear Bloodfallen
After Roswaal assigned Rem to work with Shalltear as nurses, they were on descent terms with each other.

On the beach trip, Rem was clueless when Shalltear had a glance on her chest.

One day, Rem seemed to catch on to the notion about Shalltear's self-consciousness.

During field day, Rem did not laugh at Shalltear who held a sign written, "Big Breasts (Real)". Even so, Class 2 won the game against Class 3.

During physical examinations, Rem used the chain of her flail to tie up Shalltear and Albedo to prevent the pair from sneaking off from the nurse's office to see Ainz. After Rem suggested to the pair of giving their respective lovers private physical examinations in the future, they helped Wiz with taking physical examinations of the female students.