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Ken 10

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Ken 10
General Information
Original broadcast October 6, 2007
Series Ben 10
Season 4
Episode number 46
Overall number 46
Written by Greg Weisman
Directed by Sebastian Montes
Episode Guide
Previous episode Ready to Rumble
Next episode Ben 10 vs. the Negative 10: Part 1
Gallery Cast Errors

Ken 10 is the forty-sixth episode of Ben 10.


Kenny friend

One of Ken's friends

Ben 10,000 is fighting Vulkanus and sends him into the Null Void. He then gets home just in time for his son Ken's birthday party. Their relatives come and give him gifts; Gwendolyn gives him a rock pet, Max gives him a hoverboard and he receives an Omnitrix from Ben.

When Ben leaves to go fight more crime, Ken turns into XLR8 and races with him. While fighting, people and aliens watch the fight (also a kid that looks like Kevin while they were fighting Mot Snikrep).

Ken finds out that Ben put a limiter on the Omnitrix to keep Ken from heroing on his own and is displeased because Ben won't let him fight. So he becomes friends with Devlin after playing on his hoverboard. Gwendolyn talks to Ben about kids and their ways, making Ben decide that the next time there's an attack, they'll fight together.

At night, someone tries to attack Ben and Ken. Ben finds the intruder is Kevin. Ben tells Ken to go to his room because he's too strong, unwilling to let Ken fight despite the promise he made.

The next day, Ken tries to find the Null Void on his own with Devlin hoping to impress his father by finding out how Kevin escaped the Void. Turning into Ditto, Ken finds the Null Void chamber and much to his horror discovers that Devlin is the son of Kevin, who had attacked the house last night in search of the chamber using Kevin's original mutant form. Devlin releases his father just in time for Ben to arrive. Kevin reveals that being imprisoned in the void was the best thing that ever happened to him as he has now absorbed that powers of 11 000 aliens and transforms into an even more monstrous form than before. Kevin mercilessly attacks Ben, Ken and even his own son Devlin. While Ben takes the fight outside Ken has an idea to defeat Kevin.

Ben still fights Kevin, but as before weakens Ben, making him revert to human form. Ken comes in as Grey Matter and later switches to Spitter, then Buzzshock. Ken reveals he used Grey Matter's brain to remove the Omnitrix's limiter so he can switch forms at will. Kevin grabs Ken and is about to throw him, but Devlin comes in to defend him. Devlin explains why he freed Kevin - he wished his father would have cared about seeing his son again but instead finds that he doesn't care at all as he is only willing to kill the Tennysons. Devlin cries upon this realization but then resumes fighting against his father. Ken turns into XLR8. Devlin and XLR8 are thrown away and XLR8 reverts into Ken who passes out.

Ben wakes up and sees what happened to Ken, angering him. He turns into Way Big to mercilessly crush Kevin, who reverts into human form, but he gets back up. Kevin is about to attack Ben and Ken again, but Devlin imprisons Kevin in a Null Void Grenade. Max states that he has a 'special place' reserved for Kevin so he can't absorb any more alien DNA. Ken asks Ben if he can use all ten thousand of his heroes, but Ben says not to push his luck.

Devlin is about to leave until Max grabs him. Ken says he should stay with them, so Devlin becomes part of the Tennyson family. Later, Ken's rock pet regenerates and is alive again making him happy.

Noteworthy Events

Major Events

  • Ken receives his own Omnitrix.
  • Ken meets Devlin.
  • Kevin escapes from the Null Void.
  • Devlin moves in with the Tennysons.




Aliens Used

By Ben 10,000

By Ken



  • Kevin: I guess I should thank you. With all that time in the Null Void, I was able to absorb a few tricks from all the aliens you locked in there with me. (transforms into his mutant form) Ben 10,000, meet Kevin 11,000!

Quotes Right


  • Kevin: (laughs manically, but is suddenly crushed by a tremendous fist; camera zooms out to reveal Way Big)
  • Way Big: How dare you! (with no mercy, he starts rapidly slamming his fists on Kevin)

Quotes Right


  • Ben 10,000/Four Arms: (about Vulkanus) I do not have time for this. There's no way I'm missing another one of his birthdays so I appreciate it if you just chill out in the Null-Void. (reverts back to his human form and sends Vulkanus to the Null-Void)
  • Ben 10,000: Some scum just can't take a hint. (turns into XLR8)
  • (XLR8 runs to his HQ and reverts to his human form)
  • Ben 10,000: Told you I wouldn't miss your birthday.
  • (Ken sees him and hugs him)
  • Ken: Thanks, Dad.
  • Ben 10,000: You only turn 10 once.
  • Ken's Friends: Happy birthday, Kenny!

Quotes Right

Naming and Translations

Language Name Origin
Hungarian Ken 10 Ken 10
Portuguese (Br) Ken 10 Ken 10
Spanish (HA) Ken 10 Ken 10
Spanish (Spain) Ken Ten Ken Ten



  • This episode celebrates the three year anniversary of the series.
  • It is revealed that adult Gwen can tame rock monsters as pets.
Ben 10 Episodes
Season 1
And Then There Were 10Washington B.C.The KrakkenPermanent RetirementHuntedTourist TrapKevin 11The AllianceLast LaughLucky GirlA Small ProblemSide EffectsSecrets
Season 2
TruthThe Big TickFramedGwen 10Grudge MatchThe Galactic EnforcersCamp FearUltimate WeaponTough LuckThey Lurk BelowGhostfreaked OutDr. Animo and the Mutant RayBack with a Vengeance
Season 3
Ben 10,000Midnight MadnessA Change of FaceMerry ChristmasBenwolfGame OverSuper Alien Hero Buddy AdventuresUnder WrapsThe UnnaturalsMonster WeatherThe ReturnBe Afraid of the DarkThe Visitor
Season 4
Perfect DayDivided We StandDon't Drink the WaterBig Fat Alien WeddingBen 4 Good BuddyReady to RumbleKen 10Ben 10 vs. the Negative 10: Part 1Ben 10 vs. the Negative 10: Part 2Goodbye and Good Riddance
HijackedSnack BreakSpeeded OutSurvival SkillsRadio DazedSleepaway CamperDogged PursuitLet the Games BeginHandle with CareRoad Trip Rumble
Ben 10: Secret of the OmnitrixBen 10: Race Against TimeBen 10: Destroy All Aliens

Start a Discussion Discussions about Ken 10

  • Kevin 11,000

    37 messages
    • <div class="quote">Nadir32 wrote:<br />Wait,Is it stated Devlins mother isnt gwen or something ?</div> <...
    • <div class="quote">The Nth Doctor wrote:<br />I still find it hard to believe that Kevin, after all his charac...
  • Ken 10 is canon

    5 messages
    • <div class="quote">Oneofthosedf wrote:<br /><div class="quote">BrimStoned wrote:<br />yeah, ...
    • I wish they could be watched online at least or something (only the parts where they say the new stuff).

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