Liliana is nothing but a servant to Voban, one that he is perfectly willing to kill and make her one of his undead servants if she proves too willful and disobedient, or if she fails him.Heretic Gods to fight.
Voban hates Godou for taking away what he considered his property (Yuri) from him, and fighting him to a draw. In his eyes, the two are enemies to the end.
Voban detests Salvatore for killing a Heretic God which he purposedly summoned.
Voban appears to have a long history with Aisha. He treats her calliously, but is willing to interact with her.