Gwen Tennyson

Gwendolyn Catherine "Gwen" Tennyson is the protagonist of the Cartoon Network original series Ben 10. She is Ben's feisty ten-year-old first cousin. Gwen shared a love-hate family relationship with Ben. Before discovering her dormant magical and Anodite powers, she helps Ben by simply using her innate cleverness and intelligence.

Overall, her most notable skill is her incredibly strong magical abilities. Having within her what Charmcaster calls a "magical aura", Gwen is capable of using various magical artifacts, charms, talismans, spellbooks, and spells. On two occasions, Gwen has used the five Charms of Bezel to become a superheroine by the name of "Lucky Girl". At first, her magical ability drew from the luck-granting Charm of Bezel, which innately gave her perfectly good luck in everything she did. While wearing the charm, any action she took would result in a chain reaction benefiting her original intent, although often injuring Ben in the process. She later brought back her super-heroine identity after obtaining the Keystone of Bezel, which greatly increased and strengthened her natural abilities to superhuman levels rather than just affecting her luck, and which granted her superhuman agility, stamina, and endurance. She was later forced to retire when the Charms of Bezel were again destroyed.