Zeo Alucard

Zeo Alucard is the main protagonist of the series, and the canon route for the game, revolving Elise.

Personality
Zeo is obsessed with Elise and believes that he should have her because of how much he values her. He's determined to make her his, even if it means killing people or ruining others' lives. Because Elise was the only person who was nice to him, he desired to be loved solely by Elise.

Zeo believes that because he and Elise are twins that they have a closer relationship than anyone could hope to achieve with her. He constantly talks about his thoughts "reaching" her and that only she is capable of understanding him as he is with her. During his ending, he believes that because they are twins, his sister loves him like he loves her. He remembers that his sister is afraid of storms and is willing to stay with her until she feels at ease.

Zeo is very doting to Elise. He is willing to walk her to school just to be near her. Because of what happened to their mother, Zeo is also willing to protect his sister at all costs. According to Sora, Zeo hoped to use a school field trip so that he could be alone with his sister. He gets quite jealous of his friends being near his sister and is jealous of other men at school being near her.

When he suspects that Elise doesn't love him, he threatens to commit a murder-suicide. While he claimed it was a joke at first, he intends to keep it if she were to betray him in some way.

However, Zeo is also wracked with self-guilt over his wrongdoings due to his own fear of losing Elise and allowing her to get hurt, convincing himself of his actions by saying it is for her protection. After he realizes Elise's true feelings, he is also seen to show utter remorse, to the point where he allows Elise to chain him up and lock himself inside a cage to make amends.