Run Elsie Jewelria

Run Elise Jewelria is a childhood friend of Lala and the girl version of Ren Elise Jewelria. As Run and Ren are royalty from planet Memorze, they can change gender in mind and body upon triggering a specific stimulus; in their case, a sneeze. Ren hates Rito, especially after he accidentally kissed him, but Run fell in love with Rito because of that kiss, which caused Ren to further dislike Rito.

Run becomes a famous idol and actress and released several albums. She becomes friends with Kyouko after Run played an antagonist in her show, and now they are often seen together, even releasing a few albums together.

In To-Love-Ru Darkness  Chapter 9 or To Love-Ru Darkness Episode 6, Run and Ren permanently separated into two separate beings after reaching 'adulthood'.

Appearance
Run has   hot pink eyes  and  has  long light green hair with two points sticking out at the top. Her body appears slender and curvy, she is always wearing clothing typical of Idols in Japan, especially her Blue Metalia outfit that she wears when starring at the Magical Kyouko show.

Personality
Her personality can be described as determined and obsessive (especially where Rito is concerned). On some occasions, when it comes to Rito who she loves so much, she can be quite cheery and sweet, and would often cling on to him, Run can also be a bit of a stalker to him. She can get a little mad when it comes to Lala and her relationship with Rito. Run can be a bit melodramatic and can misinterpret things easily, more so in the anime, a good example of this in episode 16 of the original series.

In the first series, her personality was really childish, and she would always try to pull pranks on Lala (which ultimately fail) to get back at her for all of the mischief she suffered from her. But in To-Love-Ru Darkness, she has greatly matured, as she no longer pulls any pranks on Lala and focuses on her work as an idol. She tries harder to gain Rito's love. Especially now since she is now a full woman and is no longer with Ren.

Childhood
Sometimes Run would be taken to Deviluke to play with Lala. Apparently she really hated being part of Lala's experiments and being forced to go through so much trouble (even while Ren was in control). Even though Run hated Lala, her male counterpart Ren falls in love with her.

Powers and Abilities
It is said that due to evolution, those from Memorze like Run are born with both male and female genders, each with its own personality. Normally Memorzorians would change monthly, but due to the differences in environment and magnetic fields on Earth, Run and Ren would change from a sneeze. When Run is in control, she is able to communicate with Ren within her subconscious (this works for Ren as well). After reaching adulthood, they both physically separate, and Run no longer shares a body with Ren, so this ability is not usable. Ever since the separation Run has tried harder to harbor Rito's love.

Run is shown (comically) to have great speed and strength, like running really fast while carrying a huge hammer, but cannot control her speed while carrying it.

She would often order certain items from the galactic internet to try and humiliate Lala.

Trivia
Her first cameo appearance in Mayoi Neko Overrun is at chapter 2 page 24(at the poster).

Run also appeared at a television show (probably the show where she co-stars with Kyouko) in Mayoi Neko Overrun Chapter 6.