Voltaire
Voltaire is Dracula's son who wants to prove to him that a plant-based diet is a good alternative to drinking blood, and the main character in Voltaire: The Vegan Vampire.
During the day, Voltaire sows magical seeds to grow crops. He also explores the world to conquer more biomes and gain new knowledge. However, when night falls, Dracula sends his minions to the farm to destroy the plants and make his son return to a “proper,” red-blooded diet. Of course, Voltaire defends the crops each time, with his abilities dependent on the vampiric form. When Dracula's lesser minions fall, bosses appear and need to be defeated.
Sometimes, Voltaire caves in to his bloodlust and bites a neck, which causes problems, but he always tries to get back on the vegan diet. There is always a chance to try dieting again.