Kurisu is a character in the Mentality Fanfic Series.
Nothing is known about Kurisu's history.
In Emotivity - The Prologue, he appears in Nohasu Enkei's nightmare. In an abyss, he is handing out free avocados in a grandiose manner for whatever reason. After giving Nohasu a chance to try some, he then informs him that the avocados are poisoned.
Kurisu has a grandiose actor kind of personality. And he apparently makes a good salesman.