Zeru Veronin is a remarkable individual who has achieved a lot in his life so far. He currently holds the position of Head Housekeeper at the Blackwood Residence, is an accomplished alchemist, and is Dante's Personal Assistant. Despite his many accolades, he is most known for having a short temper and potty-mouth. This can make him seem intimidating to those who don't know him well, but the other mansion residents understand that it’s simply how he expresses himself. In reality, he’s very caring and is just looking out for everyone's best interests.

Zeru's knowledge of alchemy is vast and comprehensive, and he is constantly seeking to expand his understanding of the field. He is fiercely protective of his creations and goes to great lengths to prevent others from touching his them as many of his potions are highly dangerous. This doesn’t stop the others from breaking in his room and touching them anyway.