Luka/Paradox

Luka returns as the protagonist of Monster Girl Quest: Paradox but things are not as they once were. For starters, monsters and humans have been living together in relative peace since the Great Disaster thirty years ago so his dream of becoming a hero to foster co-existance between them has never even occured to him. While he still desires to be a hero, his immediate concern is to go out and look for his father, Marcellus, who is still alive in the world of Paradox.

Personality
The gameplay heavy nature of Paradox and its focus on other companions has left little room for Luka's personality to shine through so exactly how much has been changed and how much remains to be seen but for now he appears to be the same naive hero from the first game.

Backstory
Luka possess a new ability in Paradox, which will remain undisclosed despite its early acquistion, that hints there might be something more to his lineage this time around but that is mere speculation at this point based on an end-game spoiler.