This list is composed of characters from across the five different series in the Ben 10 franchise.

Original Series

Vilgax

Kevin 11

Doctor Animo

Hex

Charmcaster

The Forever Knights

Enoch

Driscoll

Phil Billings

Zs'Skayr

Dr. Viktor

Sixsix

Vulkanus

Zombozo

Rojo

Clancy

The Circus Freak Trio

Exo-Skull

Sublimino

Kraab

Yenaldooshi

Ben 10: Alien Force

The Highbreed

Psyphon

Simian

Sunder

Patrick

Chadwick

Morton

Darkstar

Albedo

Ragnarok

Attea

Incurseans

Raff

Ssserpent

The Vreedle Family

The Techadons

Ben 10: Ultimate Alien

Aggregor

Urian

George

Diagon

The Esoterica

Will Harangue

Adwaita

Captain Nemesis

Trumbipulor

Inspector 13

Ben 10 Omniverse

Malware

Dr. Psychobos

Khyber the Huntsman

Psyphon's Gang

Billy Billions

Fistrick

Princess Looma

Nyancy Chan

Lord Transyl

The Rooters

Evil Alternate Bens

Kundo

Subdora

Maltruant

Charles Zenith

Gorvan