Ben Tennyson from Symmetric transformation AU
Full Name: Benjamin Kirby Tennyson
Aliases: Ben 10 (as a teen), Ben 10K / Ben Ten Thousand / Ben 10,000, Hero of Heroes / Champion of Champions, Keeper of the Omnitrix, Savior of Worlds, the Bridge Between Species, the Strongest Being in Existence… and a bunch more.
Ben Tennyson becoming Ben 10K at just 25 makes him one of the youngest Ben 10Ks in the entire BenVerse.
Most other Bens—and especially the older 10Ks—call him “Boyish”, because he really is a young Ben 10K. He still acts like a teenager half the time.
>So the big question is: how did he get promoted this fast?<
Ben’s gone through a ridiculous amount of chaos and growth before hitting 25, and every one of those experiences pushed him toward earning the title.
1.He finally defeats Malgax (Vilgax + Malware) and locks him away in a permanent stasis prison, freeing the universe from him once and for all.
(Of course, this leaves Vilgaxia without a ruler, so Ben ends up running the planet for almost a year to prevent a power‑grab meltdown. After stabilizing things, he appoints a proper leader.)
2. He meets heroes from parallel worlds—like Superman and Batman. Ben accidentally ends up in the DC Universe for several months and works alongside them.
3. He gets stranded in a universe that was completely ruined and hopeless, but somehow manages to inspire the people there and save what was left.
4. He’s been present in most timeline‑level and multiversal crises, usually arriving at the final moment of victory. Because of that, tons of alternate Bens know exactly who he is.
5. He trained under Azmuth.
Before earning “Master Control,” Azmuth made him study high‑level tech for months so Ben could fix the Omnitrix himself if anything went wrong.
(Ben’s not a genius, but he managed to learn just enough to get by.)
Ben still has his teenage personality—yeah, he’s still selfish and cocky. But:
- He’s extremely optimistic. Even in multiversal destruction, time collapse, or literal end‑of‑everything situations, he keeps smiling and looking for hope.
- He gets close to people way too fast and warms up to everyone.
- He still cracks dumb jokes and sarcastic one‑liners.
- He still does stupid things and fangirls over his idols like a kid. (He’s obviously a hardcore Sumo Slammers fan.)
- He constantly brags about his wins, powers, dumb jokes—everything.
- He’s addicted to adrenaline and danger. Everyone calls him insane.
- He’s terrible at romance.
He dates Kai because he wants the future some of his variants have with her, but all it gets him is Kai distancing herself and going on long trips.
And he’s known as “The Runaway Groom” because he keeps ditching his weddings (mostly with Looma Red Wind).
-But despite all this, he’s not careless. Ben is actually one of the most worried, burdened people alive. When he switches into serious mode, he leads situations so well that people can’t believe he’s the same goofy guy.
-He’s been through painful failures and dark experiences, and those left him with a quiet sadness inside. Acting childish helps him cope.
-And even with all his flaws, Ben has strict moral lines. He might be selfish and arrogant, but he never insults people, always shows respect, and—like Superman and Batman—he follows a strict no‑killing rule.
[Powers / Abilities / Weaknesses]
1_ The OmnitrixLike every Ben 10K, his Omnitrix evolved with him. As he grew older, he spent six years developing a unique signature feature he calls “Final Mode.”
▼Special Features Added to His Omnitrix:
Ben took inspiration from the alternate Bens he met as a kid and teenage, plus the ones he met across the multiverse. With that, he built a version of the Omnitrix that can:
(1) Fuse more than two aliens at once — basically Fusion Transformations. (He prefers combining 3. He got this idea from the OV Ben 10K.)
(2) Channel alien powers directly into his human body without transforming, allowing partial‑power modes. (Ultimate Ben10K)
(3) He can summon his aliens, letting them act on their own with full awareness and fight alongside him. (He got this idea from one of his parallel selves—Chaqutrix Ben.)
(4) He restored the Ultimate function to the Omnitrix, and he can use it in all three modes above.
(5) And of course, he can still transform normally, one alien at a time. (Not sure if that even counts as a “feature,” but it’s there.)
But… do these abilities have weaknesses?
These functions drain a ton of energy. The Omnitrix is still a device—and even living beings would get exhausted using this much power, let alone a piece of tech.
● Without Final Mode, the Omnitrix has a 24‑hour charge.
Every transformation subtracts time based on how long Ben stays in that form. If he stops transforming, the lost time slowly regenerates.
● In Final Mode, the charge drops depending on how many aliens he’s using.
Roughly 30 minutes per alien. (2 aliens = 1 hour lost, 4 aliens = 2 hours lost.)
And if he starts summoning, fusing, or channeling powers, it drains 10 minutes per action.
Here’s a clearer example:
Ben chooses five aliens for Final Mode → that’s 2.5 hours gone instantly. If he summons all five and uses one of their powers, that’s another 60 minutes. Total loss: 3.5 hours. So from the original 24 hours, he’s left with 20.5 hours.
The rest depends on how he fights and what choices he makes. Because of this, Ben usually sticks to 3 aliens in Final Mode so he doesn’t burn through the charge too fast and can keep fighting longer.
✓ If Ben manages to rest between transformations, the Omnitrix recovers a little—about five extra minutes.
<What if he keeps going nonstop?>
• Then the Omnitrix shuts down, leaving Ben completely defenseless until it recharges. (Full recharge takes 5 to 6 hours.)
<But what if Ben gets in danger during those hours?>
• The Omnitrix can still transform him into one alien that can save his life—but he’ll be stuck in that form until the recharge finishes.
Overall, Ben still uses his regular transformations most of the time. Final Mode is reserved for serious, high‑stakes situations. He can freely use his Ultimate forms, but the rest of Final Mode’s features stay locked unless he activates it.
Ben didn’t want to rely only on alien fights, so he trained with martial arts masters. He’s skilled in:
- Karate (Gwen helped him with this one)
✿ He also trained in acrobatics and flexibility, which he loves showing off.
Fans—especially girls—go crazy when he does those flashy moves.
✿ He picked up parkour too, mostly for situations where he needs to run for his life. (Usually while in human form.)
Ben’s look is very different from other Ben 10Ks. Most 10Ks wear tight shirts to show off their muscles—kind of a callback to their ten‑year‑old selves who wore similar outfits.
But Ben in this AU doesn’t dress like that at 25–26. (Though from ages 19 to 21, he did wear the Ultimate Ben 10K outfit with Omniverse colors, but he dropped it because it felt repetitive.)
His style changed a lot from age 18 to 22. Back then, he cared about fashion because fans judged his appearance, and every time he changed his style, it became a trend.
☆ Now he only cares about what he likes. If he doesn’t vibe with a clothing style, he simply won’t wear it.
His everyday outfit is basically sporty, but here’s his usual look:
- A loose, short‑sleeved green hoodie (no zipper, slightly dark green)
- Black American‑military‑style cargo pants
- Heavy, studded leather boots.
✓ And yeah—he loves this outfit.
<Why does he like it so much?>
Sure, part of it is just personal taste.
But he actually has a few real reasons:
✦ Reason 1 — Comfort & Privacy
With the turtleneck and the loose hoodie, he feels free and less exposed. It keeps the creepy stares—fans, villains, random people—from checking out his body. {Those looks used to make his skin crawl. He hated it.}
And honestly, the oversized hoodie makes him look younger.People assume he’s barely twenty. Nobody realizes he’s actually muscular under all that.
✦ Reason 2 — Utility Cargo pants are a lifesaver. He doesn’t lose his keys anymore—especially his car key. (Yeah, the hoodie has a big pocket, but cargo pockets are a whole different level.) He’s a bit scatterbrained, so the extra pockets help a lot. He even keeps small combat tools in them.
{♢} And he ties four colored ribbons to his belt—each color representing someone important to him:
He’ll soon add a pastel green ribbon for Kaiden.
He wears heavy, studded leather boots because:
(1) They make him taller.
(2) He loves the click‑clack sound they make.
(3) They double the impact of his kicks. When he fights in human form—using karate or judo—those boots hit hard enough to crack teeth. Guaranteed damage.
His hair have undercut style.
When he’s invited to major political events or fancy galas, he gels it back and wears a suit.(And somehow, every time he does, something chaotic ends up happening.)
Since Ben built this Omnitrix himself, he changed its design.
★ Normal Mode: Looks similar to Albedo’s Omniverse Omnitrix.
✿ Final Mode: Turns into a glove that covers his whole forearm. The gear‑like ring shifts from the back of his hand down toward his wrist. This glove mode forces Ben to roll up his sleeve—otherwise he can’t use it.
In Final Mode, he selects his aliens and stores them in the outer shell of the device, like using a tablet or an iPad.
(1) Ben is ranked #13 among the 15 most attractive men in the Milky Way. (He used to be #4 before he changed his style.)
(2) He hates acting in movies or shows about himself. He tried once because Ben 23 begged him, but every portrayal made him look dumb—so he refuses to ever do it again.
(3) He cooks for his son. Weird, but true. He always overdoes the spices, though, and the food becomes basically inedible.
(4) He’s the richest man on Earth. Between sponsorship deals, expensive gifts from alien worlds, and his Plumber salary, he’s loaded.
(5) His fashion and entertainment lines are insanely popular: Ben 10K iPhone, 10K Golf Stage, 10K Green All‑Star, Ben 10K plushies and alien merch, 10K makeup line, and more.
(6) During his intergalactic trip with Rook at age 17, he collected over 13 million DNA samples, way more than most of his variants.
Rook insists they should call him Ben 10 Million, Ben 10M because “Ten Thousand” is way too small a number for him.
(7) Besides Ben 23 and No‑Watch Ben, his closest friends are Benny 10 and Chaquetrix Ben—both parallel Bens. (He’s also fought against Carnitrix Ben before.)
(8) He owns a tower shaped like an hourglass—his home. He calls it the «Hourglass Tower». It has four floors, a basement, and hidden rooms, all managed by an AI named Opal. Ben designed and built both the tower and Opal himself.
(9) Ben managed to restructure Primus, turning it into a proper habitat for his aliens.
Primus B is one of Ben’s most secure and important self‑made planets. It’s basically the home world for all his Omnitrix aliens—along with their Ultimate versions. They’re fully sentient and get along well with Eunice and Albedo (he's changed).
And of course, they-aliens- adore Kaiden and accept him as one of their child.
This might sound unbelievable, but Ben has an alien called Inferno Lady—the only female alien among his mostly male roster.
Her species, "Lavataxydian", is exclusively female. They’re similar to Heatblast in concept, but made of magma and molten material. She can manipulate LNG condensates, and if she gets angry enough, she can turn an entire planet into a burning hellscape.
Despite their reputation, Lavataxydians are actually very good— as long as you don’t provoke their rage. Ben has zero issues having Inferno Lady in his lineup. (He’s a flexible guy anyway. Gender doesn’t bother him.)
