Mayuri Shiina

Mayuri Shiina is one of the main characters from the Steins;Gate anime and games.

Mayuri, also called Mayushii ☆, is Rintarō Okabe's childhood friend and companion. She works part-time at a maid cafe called May Queen Nyan-nyan as a costume maid and occasionally makes cosplay outfits. She is usually the one who financially supports Rintarou's "research" when food is needed.

Appearance
Mayuri is a short girl with short black hair and lightly blue iris. Her hair forms fringes that sweep from either side. Mayuri's eyebrows are noticeably thick.

Mayuri's outfit is simple and comfortable, consisting of a light blue one-piece dress and a hat of the same color. She also wears leggings underneath her clothing.

When she attends to her work in May Queen Nyan-nyan, she wears a blonde wig tied into a long ponytail.

Personality
Mayuri possesses an extremely childish and naïve attitude for her age. While this may have something to do with her inability to accept the death of her grandmother when she was young, Okabe states at one point that she's always been a little bit different, though he never goes into any detail beyond this. Mayuri has a great fondness for cute things like Upa cushions, and likes to give cute nicknames to familiar people, like Okabe (Okarin), even referring to herself as Mayushii.

Mayuri is one of the less intelligent members of the lab, often misunderstanding or misphrasing information she overhears from Rintarou or Kurisu, though at certain times her responses can be quite helpful. She is also the one with the "clearest eyes" because she knew from the start that no good can come from Okarin's time traveling experiments (said by Okabe Rintarou while he was crying next to Kurisu about his inability to help Mayuri escape death on Friday the 13th). Mayuri also does not question Daru's perverted comments and mannerisms, or is not in any way offended by them (though this is likely because she does not interpret them as such.

Despite being socially inept, she is also responsible for Rintarou's well-being, usually tending to his needs most of the time. She's also very attentive to details, often noticing things about people that others would miss. She figured out Suzuha Amane is Itaru Hashida's daughter through the details on the Time Machine and from Daru's daily habits, suggesting a degree of skills in observation and problem-solving.

Trivia

 * Mayuri's voice was used as a user guide for the Phone Microwave. According to Rintarou, it made the Microwave sound silly.
 * She was the first person to discover the Microwave's "irregular" abilities when she accidentally froze her chicken while trying to thaw it. She also gave the gel-i-fied bananas the name "gelbana".
 * So far, the only ending of the visual novel in which Mayuri's death is definite is Luka's ending, as she survived in Faris's ending, Kurisu's ending (same thing applies to the True end), her own ending and Suzuha's ending (implied to have been saved through the combined efforts of Rintarou and Suzuha).
 * Also, Mayuri dies of natural causes if Luka's ending was achieved. This is the one of two instances in the plot where the cause of Mayuri's death was not an accident/murder, the other being when she goes to ComiMa on the 16th after Luka's mail is reversed.


 * Mayuri, like all other characters, has blurry memories of what happened to her in the other world lines, though unlike them she only thinks of the memories as "bad dreams".
 * According to Okabe, his first kiss was with Mayuri in elementary school, though they were "just messing around".
 * Lab Member 002. Second to the founder, already joined at the start of the main story. She joined because she saw that Okabe was lonely and she wanted to be with him (under the gimmick of being his hostage).
 * Mayuri is so innocent and honest, Kurisu once thought that Mayuri was kidnapped by Okabe.