The Modifyers: Tales of Agent Xero

 is an American animated action-adventure-comedy spy television series, being created by and. It is produced by Nickelodeon Animation Studios and it airs on Nickelodeon since June 8th, 2017.

Synopsis
Two weeks after the original short, Agent Xero is on the way to fight down any kind of menace and foes.

Main

 * Agent Xero (voiced by Mae Whitman) - a happy-go-lucky and friendly teenage secret agent who heads out for peril and adventure.
 * Mole (voiced by Jeff Bennett) - Xero's shapeshifting robotic assistant who helps her with her missions by using his powers to aid her.

Supporting

 * Katz (voiced by Paul Rugg) - the charismatic head of L.I.F.E. who assigns Xero and Mole with their missions and often TBD.
 * Agent Dos (voiced by James Arnold Taylor) - a funny L.I.F.E. agent who is smitten with Xero and occasionally helps her with her missions at times.
 * Kenny (voiced by Tom Kenny) - L.I.F.E.'s geeky head scientist who is Mole's creator and provides Xero with several gadgets, even though she uses some of them TBD.
 * Sparko (vocal effects by Dee Bradley Baker) - Xero's playful pet dog who occasionally follows her in her missions.
 * Carrie (voiced by Ashley Johnson) - Xero's girly best friend who is a spy as well and TBD.
 * Lucy (voiced by Tara Strong) - Xero's self-absorbed rival who often competes with her to become the best agent around as she TBD.
 * Kathy (voiced by Nika Futterman) - a TBD merchant who TBD.

Antagonists

 * Baron Vain (also voiced by Paul Rugg) - a clumsy wannabe supervillain who aims to rule over the TBD.
 * Rat (also voiced by Jeff Bennett) - Baron Vain's insane henchman who is rather stupid and TBD.
 * Wolfa (voiced by Courtenay Taylor) - a sadistic wolf-like criminal who TBD.
 * Charlotte Rogue (also voiced by Mae Whitman) - one of Xero's diguises who has split into Wolfa's seductive henchgirl who TBD.
 * Jonah Knockout (voiced by Nolan North) - a tough robotic actor who TBD.
 * Sylvianne Barnier (voiced by Hynden Walch) - a greedy French-accented fashion designer who TBD.
 * [warlord, male] (voiced by John DiMaggio) - a TBD warlord who TBD.
 * Countess Elizabeth (voiced by Cassandra Lee Morris) - a TBD vampire who TBD.

Xero's disguises

 * Lacey Shadows - Baron Vain's tomboyish and competent henchgirl who is TBD.
 * Greta Undge - a rough rock star who TBD.
 * Princess Renée Lee - a beautiful princess who TBD.
 * Hilda Bee - a cool hippie who TBD.
 * Ava Wright - a fearless aviator who TBD.
 * Charlotte Rogue (formerly) - a seductive criminal who serves Wolfa and TBD, later splitting off from Xero and becoming her own person.
 * Charlotte Rogue (formerly) - a seductive criminal who serves Wolfa and TBD, later splitting off from Xero and becoming her own person.

Trivia

 * Following the death of Chris Reccardi on May 2nd, 2019, Lynne Naylor assumed full responsibility of the show's production.