Betty 10

Elizabeth "Betty" Tennyson is the alternate and female counterpart of Ben 10 from Dimension 24.

Background
Elizabeth Tennyson, nicknamed Betty, was born in Bellwood, USA in Dimension 24. Like the main counterparts, she went on a summer vacation with her grandmother and cousin, which she was very happy about it (unlike Ben, who was upset because Gwen was included).

After they set up camp, Betty saw the shooting star and went to the crater before Glen does. Ignoring her cousin's warning, she reached out to grab the Omnitrix and it instantly clamps itself on her wrist, much to her amaze.

Betty first transform into Heatblast and shows off her powers by writing her name in the sky then she turn into Grey Matter by accident when she try to make a pass on Glen and got chased by a raccoon. She later become Diamondhead to battle the Bioid and, with Glen's advice, she won.

In the next morning, Betty has been testing her Omnitrix, which she uses Upgrade to speed up Glen's laptop's loading progress, XLR8 to get extra clothes, and Mermaid to get some fishes. Betty decide that she should use her new powers to help people but Glen doubt it so she proves her skill by going to the bowling ally, become Four Arms and land four perfect strikes.

Suddenly they got attacked by Vilgaxia, who wants the Omnitrix. Betty couldn't transform because the Omnitrix needs recharge so Glen defend her but got easily slap aside by the tyrant and she got taken hostage.

Vilgaxia explains the Omnitrix's true purpose then Maxine and Glen smash into the ship and rescue Betty. Following Glen's suggestion, she uses Upgrade to merge with the RV and flew out of the ship, after tossing Vilgaxia back in and she died in the explosion.

During the Jen Again Part 3 event, Betty, Glen and their new friend/former nemesis, Krystal Levin, got sucked into Eon's self-created dimension and teamed up with everyone to fight Eon's forces.

In Special Episode #5: The Legendary Osmosian, Betty was seen battling against Albeda with her new partner, Rook Blanka but was getting defeat until she was rescued by the Master DNA Force. Later, Albeda joined them, much to Betty's surprise.

Appearance
At age 13, Betty is taller then 10-year-old Ben and has young curve, newly-developed breasts and small rear. She has long burnette hair tied in a ponytail, wore black stripes, white shirt with the bottom tied in a knot, short green pants with overall belts and black/white shoes with black stripes. She wore the prototype Omnitrix on her left wrist.

At age 16, she was seen wearing the exact clothes of Ben in Alien Force/Ultimate Alien and her hair are slightly shorter and more developed body. She wears the Ultimatrix on her left arm.

She later gain new looks; she cut her hair short, has red lips, wore sleeveless green-striped, black shirt with the "10" on the center, brown pants and green/white sneakers. She wears the Omnitrix on her left wrist.

Personality
In the sense, Betty behave exactly like Ben, only girlish, carefree and lack immaturity after obtaining the Omnitrix. She is serious when she believe she can use the Omnitrix for good and has a sense of humor.

According to Albeda, Betty has a seductive side that only comes out when she ate too much sugars, as it shown in Special Episode #3 when Betty try to kiss Glen and even flirt him as Grey Matter.

Powers And Abilities
Betty wields the protoype Omnitrix (then Ultimatrix, then Omnitrix) that allows her to transform into all the female version of Ben's aliens, including some of the aliens from Gwen and Jen.

Her Omnitrix has Ultimate Function.

It has shown that she mastered her alien form in much quicker state, just like Gwen 10.

Weakness
Betty relies on the Omnitrix to fight, just like all Bens.

When the Omnitrix timed out, she has to wait until it recharges.

Seen Aliens

 * Heatblast
 * Grey Matter
 * Diamondhead
 * Four Arms
 * Upgrade
 * Wildvine
 * Way Big
 * Crushhopper
 * Atomix
 * Gutrot
 * Buzzshock
 * Enernite

Unseen Aliens

 * XLR8
 * Mermaid
 * Snare-Oh
 * Toepick
 * Geostorm
 * Biohazard
 * Shellhead
 * Spitter

Trivia

 * Betty's original name was Brenna but was changed, because it didn't ring much.
 * Betty's seductive side and Ben's hysteric are both cause from eating too much sugars.
 * Betty is lovesick, as she try to make a pass on both Glen and Ben 14.