Cindy "Mac" Mackenzie

Mac is the school's quiet computer genius, tucked into Neptune High's economic middle and largely overlooked by the class war around her. She's sharp, dryly funny, and self-sufficient, more comfortable behind a screen than in a clique, until Veronica pulls her into casework that puts her considerable skills to actual use.

Tina Majorino plays her with a deadpan restraint that lets the writing's wit land without mugging for it. Mac is the rare tech-genius character treated as a person first, gadget second, and the show uses her outsider status to needle Neptune's class divide without ever making her a punchline.