The diminutive Minnie-May Hopkins was previously working as an underage prostitute in Chicago's Chinatown at a brothel before her strong will, talent with explosives, and excellent customer service caught the attention of Rally Vincent, leading to her being hired as his assistant. May is skilled at concealing armed explosives within various objects and disarming bombs placed by others. She carries an assortment of grenades and explosives on her person, ranging from harmless smokebombs to deadly fragmentation grenades. Her expertise in this field was acquired through training under Ken Taki (also known as Takizawa), a special effects expert and notorious bomb maker who has since turned over a new leaf.