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Ben 10 Wiki
34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

Good Copy, Bad Copy is the sixteenth episode of the first season of Ben 10: Alien Force, and the sixteenth episode overall.


An alien doppelganger impersonates Ben and is out to destroy him with the power of his own Omnitrix.[CN 1]


The Forever Knights run into their castle, fleeing from something chasing them. They seal the entrance, and the thing breaks in, revealing itself to be Humungousaur. He crushes the Knights, ruining their castle, and proceeds to grab a Forever Knight. He transforms back into normal and asks the knight: "Where is Ben Tennyson?"

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Albedo pretending to be Ben

Gwen and Kevin use a piece of Ben's wreckage in order to track him to the castle, which has been torn to pieces. They see Jetray flying away and doesn't answer to them calling. A Forever Knight then tells them that Ben has attacked three of their castles, as well as a hive of DNAliens. Kevin doubts it, thinking Ben wouldn't go on missions without them.

Kevin and Gwen return to Ben's house and find Ben studying with Julie. He doesn't understand what they mean, and then Kevin points out that he isn't lying because Ben's left eye twitches when he lies. Ben realizes Julie ate all the chili fries and goes to Burger Shack to get more. The next scene shows Ben getting a pack of chili fries and leaves with terrible behavior, then another Ben gets a pack of chili fries and leaves with good behavior. When the second Ben gets out, he transforms into Big Chill and flies off.

Once Kevin and Gwen see and chase him, Ben transforms into Big Chill and chases Kevin and Gwen. The second Ben attacks another Forever Knight castle, before Kevin and Gwen arrive and help him defeat the Forever Knights, before they question him. Big Chill burps and transforms back into normal, claiming he is Ben. Another Big Chill arrives and transforms back into normal, and the second Ben reveals himself as Albedo of the Galvan. He then claims himself builder of the Omnitrix and that he must have it back.

Ben is suspicious, thinking that his Omnitrix was the only Omnitrix in the universe, and that a Galvan named Azmuth built the Omnitrix, as he saw in Ben 10: Secret of the Omnitrix, but Albedo claims that Azmuth is a liar. Albedo demands that Ben returns the Omnitrix, saying it is incomplete and has malfunctions, which could rip a hole in the fabric of the universe. Thinking he could be a Highbreed trying to trick him into losing the war, Ben tries to convince Albedo to show his face, but Albedo reveals he is stuck in Ben's human body because of his DNA fusing with Ben's due it being the default in the Omnitrix and being linked to his copy. When Ben asks how to remove the Omnitrix, he notices Albedo's twitching left eye and refuses. Albedo transforms into Jetray, grabbing Ben and taking him away. Ben transforms into Humungousaur in response. Kevin and Gwen combine their powers to attack Jetray and Humungousaur grabs him. Jetray manages to escape, but Gwen can track him because of the mana he left.

Gwen tracks Albedo to a computer factory. Ben leaves Gwen and Kevin while trying to surround Albedo, and Kevin tries to make sure which one is Ben by putting an X on his cheek, calling him "Ben X", but Ben erases it. Albedo arrives in the form of Goop, tricking Gwen and Kevin. When Ben arrives, Albedo catches them in packing foam. Ben transforms into Goop, attacking Albedo. Albedo transforms into Humungousaur and defeats Goop. Goop transforms into Swampfire and defeats Humungousaur by throwing mud in his eyes. Meanwhile, Gwen tries to free Kevin. Humungousaur transforms into Big Chill and freezes Swampfire. Swampfire transforms into Brainstorm and uses his electricity to attack Big Chill, who transforms into Echo Echo and splits into six, using his sonic screams to defeat Brainstorm. Brainstorm transforms into Jetray and destroys four of the Echo Echos. Echo Echo transforms into Spidermonkey and traps Jetray in a web. Jetray knocks Spidermonkey away and transforms into Chromastone, breaking the web. He attempts to attack Spidermonkey, but he transforms back into Ben when the Omnitrix times out. Spidermonkey transforms back into Albedo, claiming he doesn't need an Omnitrix to defeat Ben, and he tries to punch him, as he does the same, but their Omnitrixes link, damaging Albedo's human form by sending out an energy pulse.

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Azmuth's debut in Alien Force

Azmuth appears and reveals Albedo was his assistant who created an inferior copy of the Omnitrix. Albedo believed Ben was unworthy to have the Omnitrix and wanted it for himself to restore his Galvan form. Azmuth states that the Omnitrix is beyond him and could have doomed everyone. Upset over how his former assistant put others in danger and wanted to use his creation on his own ways, Azmuth takes and disables Albedo's Omnitrix, trapping him in his human form as punishment for his arrogant act of rebellion and imprisons him in an unknown location. As he disappears, Albedo furiously screams that he hates Azmuth. Before leaving, Azmuth reveals that someone else besides him thinks Ben is worthy of the Omnitrix.

In the next morning's test, Ben gets a C+. He thinks Azmuth not letting Albedo transform back into his Galvan form wasn't a good punishment, but in a cell, Albedo disagrees. A prison guard gives him his food, which is a green stick. Filled with anger and revenge, Albedo vows that he will be free and will make Ben pay, but until that day, in his rage, he shatters the green stick, and demands chili fries.

Noteworthy Events[]

Major Events[]

  • Albedo comes to Earth and tries to take Ben's Omnitrix to become a Galvan again.
  • Bio-energy feedback from Ben and Albedo's Omnitrixes causes Albedo to take on a negative appearance.

Character Debuts[]

Minor Events[]

  • It is shown that whenever Ben tells a lie, his left eye twitches.
  • It is revealed that Albedo is Azmuth's former assistant and he built an inferior replica of the Omnitrix because he didn't trust Ben to wield it.
  • Azmuth detaches Albedo's Omnitrix core and Albedo ends up in prison.



Aliens Used[]

By Albedo[]

By Ben[]


(talking to Forever Knight)
Humungousaur (Albedo): Answer me, where is he?
Forever Knight: (confused) Why ask what you already know? Are you testing us?
Humungousaur (Albedo): (pins the Forever Knight against a wall) I test your will to live. Now, for the last time...
(Changes back to human form)
Albedo: ...Where is Ben Tennyson?

Big Chill (Ben): (lands and talks to Gwen and Kevin) You left me. (sees Albedo and transforms back)
Ben: And uh, who's your good looking friend?
Albedo: Ben Tennyson? A most difficult creature to find; but I must see you. I am Albedo of the Galvan.
Ben: A Grey Matter? (looks at him) Kinda tall.

Ben: Since you built the Omnitrix, tell me how it comes off.
Albedo: (confused) Yes, I trust you are versed in the practical applications of eight dimensional quantum gravity monopoly equations. (silence)
(Albedo's left eye twitches)
Ben: It really does twitch when I lie.
Kevin: Told ya.

Chromastone (Ben): Ahh! (reverts into Ben)
Ben: Uh oh!
Spidermonkey (Albedo): I told you! (screeches) You have drained your Omnitrix. Whereas mine...
(transforms back to Human form)
Albedo: I don't need an Omnitrix to destroy you!
(both attempt to punch each other and the Omnitrixes link)

Azmuth: Albedo, through your arrogant act of rebellion, you have proven yourself a lesser being. (Azmuth detaches Albedo's Omnitrix) You shall remain as you are in a prison of your own making.
Albedo: No, you can't!
Azmuth: I have.
Albedo: I hate you! (Albedo gets teleported away)

Ben: (shows Gwen his test) C+! And you thought I wasn't really studying.
Gwen: I'm sorry. The suspicious circumstances made me... suspicious!
Kevin: And I'm sorry I thought it was you kicking butt.
Ben: Fair enough... I suppose. Don't know how much I like Azmuth not letting Albedo turn back. Like that's a punishment. Being me isn't so bad. (slurps his slurpee)

Naming and Translations[]

Language Name Origin
Croatian Dobra i loša kopija Good and Bad Copy
French Double Maléfique Evil Copy
Hungarian Jó másolat, rossz másolat Good Copy, Bad Copy
Italian Buona copia, cattiva copia
Polish Dobra kopia, Zła kopia Good copy, Bad copy
Portuguese (Br) Imitação Barata Cheap Imitation
Russian История с двойником Бена The story with Ben's double
Spanish (HA) Buena Copia, Mala Copia Good Copy, Bad Copy
Spanish (Spain) Copia Buena Copia Mala Good Copy Bad Copy


Voice Actor Role(s)
Yuri Lowenthal Ben Tennyson
Ashley Johnson Gwen Tennyson
Greg Cipes Kevin Levin
Dee Bradley Baker Swampfire
Big Chill
Echo Echo
Jeff Bennett Azmuth
Vyvan Pham Julie Yamamoto
Greg Ellis Forever Knight #1-2
Robert David Hall Forever Knight #3



  • The title of the episode is based on the "Good cop, bad cop" routine used by the police.


  • When Albedo chases the Forever Knights as Humungousaur, his Omnitrix symbol is fully black in one shot.
  • When Gwen talks to Ben at his house, part of her eyes is red in one shot.
  • In another shot at Ben's house, Gwen is shown to be as tall as Kevin.
  • Throughout the entire episode, whenever Ben or Albedo activate their respective Omnitrixes, the aliens' holograms face away from them. Furthermore, Big Chill's hologram is cloaked on Albedo's Omnitrix but uncloaked on Ben's Omnitrix.
  • When Albedo appears as Goop, he is mostly dark green and his Anti-Gravity Projector is missing.
  • Albedo's eye doesn't twitch despite him lying to Kevin about being Ben.
  • When Albedo dodges Goop's attack, the stripes on his right shoulder are black.
  • Before Albedo transforms into Humungousaur, the stripes on his right shoulder are missing.
  • Both Big Chill and Brainstorm open their mouths.
  • In one shot when Brainstorm boasts against Albedo as Big Chill, Brainstorm's cranium plates are missing.
  • Chromastone's mouth doesn't move when he cries out his name.
  • When Ben and Albedo swing their fists at each other, their Omnitrixes' dials are sideways.
  • In one shot, Albedo's Omnitrix is seen on his right wrist rather than the left.
  • Albedo's shirt is black instead of white in two shots, first when he says "He's here!" before Azmuth arrives, and again at one point when Albedo is in his cell.
  • Kevin is behind Albedo when he makes a joke on the latter's appearance. However, after Gwen and Ben glare at him, he is to Albedo's left.
  • When Ben's teacher hands her students their papers, Julie is initially missing.


  • It is revealed that Julie likes chili fries.
  • Julie is shown to be a clever student in Physics when she gets an A whereas Ben is shown to be a below-average student as he gets a C+ as a "good" grade for him, as Physics is his worst subject.
    • However, in Paradox, Paradox stated that he has a good logic about transdimensional metaphysics. Also, Paradox told Ben that because of his knowledge in transdimensional metaphysics, he has been saved in many situations in the future.
  • It is revealed in a flashback in Trouble Helix that the first time Ben and Albedo met chronologically was four years prior to Alien Force, when Albedo was still in his Galvan form.
  • At the end of the episode, when Azmuth states that alongside him, somebody else also thought that Ben was the true wielder of the Omnitrix, he is referring to Max, which would later be revealed in The Final Battle: Part 2, during Ben and Azmuth's conversation.
  • The shot of Albedo smacking his Omnitrix to transform into Big Chill is taken from Ben's transformation into the same alien in Kevin's Big Score.
  • From this episode onwards, Echo Echo's voice no longer has a robotic filter.
  • The fight scene between Ben and Albedo in the computer factory was storyboarded by LeSean Thomas.[LT 1]
    • In the storyboards, Swampfire is depicted with one of his concept designs instead of his final design.


Crew Statements[]

T.J. Collins[]

LeSean Thomas[]

Cartoon Network[]

Ben 10: Alien Force Episodes