Linette

Linette, also known as Psyche, is a main character in the story Summonoid.

Story
Linette was made by the summoners of Summonville to bring Summonoidia back to Summonia. Shortly after being made, Linette, along with some summonoid warriors, make their hiding place, where the enemy summonoids won't find them. It is unknown what happened to her after the summoner warriors were summonoidized, though, and she isn't seen for the rest of the story.

Linette is only seen again in the Ambivalence Ending, where she sings "If You're Happy and You Know It, Heal Yourself" along with Summonine, Serendipity, and Yumiko.

Trivia
Linette's birthday is January 11, which was the day Mika dreamt of Systely throwing a tissue away. Interestingly, there are many references to Systely in both Summonville and the Summotel. Her birthday is actually based on the day one of Mika's most favorite dreams happened on.

While Linette was made to bring Summonoidia back to Summonia, the Number Summonoids actually take her place in this role.