Charmcaster

Charmcaster is one of the main antagonists of the "Ben 10" franchise. She is the rival of Gwen Tennyson and her current arch-nemesis. While Charmcaster is mostly a villain, she became a full on anti-hero in "Ben 10: Ultimate Alien", when she decided to team up with Gwen.

Charmcaster remained an anti-hero up until the "Ben 10: Omniverse" episode "Charmed, I'm Sure", when she started out as a hero but became a villain again when she lost her Alpha Rune powers and was influenced back to evil by Adwaita. However, Hex says in "Charm School" that there is still good in her, and at the end of "Third Time's a Charm", Charmcaster is trapped inside her own bag and kept by Gwen in her room, with Gwen saying that she knows she and Charmcaster can become friends under these circumstances. In Charmcaster's final appearance, "The Most Dangerous Game Show", she plays the part of anti-hero once again and helps rescue Ben from Way Bads in the Null Void and capture the evil game show host Charles Zenith on Earth.

Ben 10

 * Tough Luck
 * A Change of Face
 * Don't Drink the Water (Neutral)
 * Ben 10 vs. the Negative 10: Part 1
 * Ben 10 vs. the Negative 10: Part 2

Ben 10: Alien Force

 * In Charm's Way
 * Time Heals

Ben 10: Ultimate Alien

 * Hit 'Em Where They Live
 * Where the Magic Happens (Anti-hero)
 * The Enemy of My Frenemy
 * Couples Retreat (Neutral)

Ben 10: Omniverse

 * Mystery Incorporeal (Neutral)
 * Charmed, I'm Sure (Anti-hero)
 * Charm School
 * Third Time's a Charm
 * The Most Dangerous Game Show (Anti-hero)