Eska is the Yandere for Bolin in the Legend of Korra. She's a less crazy version of one, but this is shown when she is very possessive.
Eska is very cold and speaks in a monotone voice, similar to her brother Desna. They seem to over analyze whatever they are thinking or seeing. She barely shows any emotion except for boredom, and her impassiveness is broken after Bolin stood her up at the wedding altar. She is possessive, which is shown when she dragged Bolin away while he was hugging the Avatar. When Bolin mentioned possibly breaking up with her, she threatened to freeze him and feed him to piranha-dolphins if he did.