Disney XD's Lab Rats Wiki
Disney XD's Lab Rats Wiki
Adam, Bree, Chase... I'm your father.
Douglas to Adam, Bree and Chase

"Bionic Showdown" is the 14th-15th episode in Season 2 of Lab Rats. It first aired on August 5, 2013. This is the 34th-35th episode overall.


Marcus and Douglas lure the Lab Rats into a trap. Adam, Bree, and Chase learn shocking revelations about their secret origins and creator. Leo also partners with Eddy for a surprise attack on Douglas' lair resulting in an epic bionic showdown.


After Donald seems to only point out what they do wrong, the Lab Rats begin to get annoyed by him. Meanwhile, Marcus hacks into Eddy's network, and he and his dad (Donald's brother Douglas) capture Donald. Marcus and his dad show Donald trapped and try to lure them to their lair. Leo reveals that Marcus is also bionic with all their powers combined, and that he wanted to tell, but Marcus threatened to go to the authorities about Adam, Bree, and Chase. They go to Marcus' secret house in their new mission suits. Adam is easily defeated by Marcus and Bree goes to his aid, but Chase uses a new ability, levitation, to "beat" Marcus. Douglas transports them into Donald's cage, and reveals that he is their father. Douglas used to work with Donald, but got kicked out of the company for evil ideas. Douglas then built Marcus, an android who would not live much longer. Leo arrives to rescue the gang with Eddy. Marcus comes outside and electrocutes Leo, but Leo survives by wearing a protection vest. Meanwhile, the Lab Rats ask Donald what happened and they manage to deflect the laser beam cage. However, Douglas reveals that he put a Triton app on their chips and will control them as soon as he decodes Donald's block. Donald and Douglas fight for the Triton app remote, and Donald ends up crushing it. Adam, Bree, and Chase take on Marcus, but equally matched. Leo arrives in the exoskeleton, but Marcus easily defeats him, and just as Marcus is about to finally kill Leo, Adam gets angry and reveals a hidden bionic ability (Blast Wave), that knocks out Donald, Douglas, Marcus, and Leo. Douglas escapes, and Donald tries to get them all out. Marcus gets back up, angry, but the lair collapses on him, killing him. Leo, Adam, Bree, Chase, and Donald escape back home, and Marcus' robotic hand rises from the rubble, but effectively shuts down, thus confirming his death. The Lab Rats say that Donald is their real father, and Donald says that he's proud of each of them.



Main Cast

Recurring Cast

Mentioned Cast


  • Marcus' dad, Douglas, reveals that he is Adam, Bree, and Chase's father. This would mean Donald is their uncle, thus making Leo their step-cousin and Tasha their aunt. Also, this makes Marcus their brother, although he is built only as an android, and the three of them are advanced.
  • This episode marks the Lab Rats’ first ever bionic battle. Coincidentally, their last bionic battle in the series as a team (The Vanishing) was also against Marcus.
  • The Lab Rats' true origins are revealed.
  • Someone is kidnapped for the first time in the series.
  • The Lab Rats are half-Irish.
  • The Lab Rats find out that Leo was right all along.
  • This episode is one-hour long.
  • It's revealed that Marcus is an android in this episode.
  • Marcus was killed in this episode. However, he returned in The Vanishing.
  • Chase unlocks his second hidden bionic ability, levitation.
  • Adam unlocks his first hidden bionic ability, which is his Blast Wave ability.
  • The Lab Rats got their new mission suits in this episode.
  • In this episode, it is revealed that Davenport has a secret weapon vault under the lab.
  • In the episode Exoskeleton vs. Grandma, Davenport said that Adam, Bree and Chase were his brother's kids, leading to us thinking it was a lie, because he was talking to Leo's grandma. But this episode revealed that what he said was true. Also he thought that Douglas was dead (due to Douglas apparently faking his death to avoid the authorities) and he told Leo's grandma that he adopted the trio after his brother died.
  • This is a one-hour episode that Tasha doesn't make a physical appearance in.
  • There is a Bionic Showdown/Remix.
  • The name of the shady character at the end of Mission: Space, and Leo vs. Evil, is revealed to be: Douglas Davenport.
  • Adam thinks Douglas has a dog, that technically is true because in Bionic Dog, Otis comes to the island.
  • In Season 4, another episode Bionic Action Hero aired on the same date as this episode. 
  • The events of this special were mentioned in Bionic Rebellion.
  • The Lab Rats were mad at Leo for not telling them that Marcus was bionic. But given that Adam, Bree and Chase never believed Leo when he told them Marcus was evil, it's likely they wouldn't even have believed him if he told them he was bionic, and even if he told them, he would risk their secret as well. However, while Bree was mad at Leo the most, Adam and Chase defended him. For Adam's case, he told her that Leo didn't tell everyone that he had bionic siblings and for Chase's case, he told her that Leo was just looking out for them.
  • This episode came under fire because it contained an inaccurate and offensive joke about nurse practitioners as being less advanced in medical care as physicians. The episode was later edited with the offensive joke removed.
    • To date, this was one of four controversial Disney Channel/XD episodes, the others being the Shake It Up episode "Party It Up", the second being the So Random! episode "Colbie Caillat", and the third being the Jessie episode "Quitting Cold Koala".
  • If you watch closely the fight between Bree and Marcus - after Bree knocks Marcus down and attempts to save Chase, Marcus actually kicks her just above her vagina rather than her stomach, which knocked her down and led to a shot focusing on her ass in her mission suit. That shot is very (in)famous amongst the fandom since it is the only time Bree's character is sexualized.


  • When they bust out of the cell, There's a shadow there that was moving that wasn't any of them, and they would have noticed it if Marcus or Douglas were there.


Donald: You've been spying on us?

Douglas: For months. And trust me, Eddy's not the only one who's... revolted by your sweeping high kicks.

— Donald and Douglas
Hello, Mr. Davenport, or should I call you... UNCLE, Mr. Davenport?
Marcus to Donald
Douglas: Once I press this, it'll activate your Triton apps and I'll control you - permanently.

Chase: No!

Bree: Stop!

Adam: Do Chase first!

— Douglas, Chase, Bree, and Adam
Marcus is just an android. He's not sleeping, he's recharging. Trouble with androids is they burn out too quick. He won't make it to his sixteenth birthday. Oh, but don't tell him that. He thinks he's getting a car.
— Douglas to The Team about Marcus
Douglas: Me, me, me me me.
Chase: You got one of those too huh?
Marcus: You have no idea.
Douglas, Chase, and Marcus
Every single journey starts with a single step and a face plant.
Leo: I can't go there empty handed.
Eddy: You're not going to. Donald told me that in a worse case scenario someone has to push this button, and you being the only one left is the worse case scenario. (...) A room full of stuff you can use to hurt yourself. I shoulda showed you this a long time ago.
Leo and Eddy



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For the image gallery of Bionic Showdown see Bionic Showdown/Gallery.



For a full transcript of Bionic Showdown, click here.


Type {{BionicShowdown}}.

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