Which characters have aliases in gattaca?

In "Gattaca," the main character Vincent Freeman uses the alias "Jerome Eugene Morrow" to infiltrate the elite space program. Jerome is a genetically superior individual who provides his identity to Vincent in exchange for a chance to live vicariously through him. Additionally, other characters, such as Anton Freeman (Vincent's brother) and Irene Cassini, also navigate their identities within the constraints of a society that heavily emphasizes genetic perfection.