However, unlike Donald, Douglas is completely ruthless, willing to do just about anything to benefit himself, and he brags about himself much, much less than his older brother. He also didn't have any problem with the idea of murdering children if they got in his way, thus making him a truly evil man, but he has developed a change of heart, and now helps the Lab Rats fight villains who are as evil as he used to be, especially Strangely enough, the one thing he cared a lot about (besides his creations) was his dog , Despite his more sadistic traits, Douglas did have a lighter side; he's pretty reckless, like Donald, and often berated him in a childish manner, such as stealing his catchphrases and calling him "Donny," which Donald hated. Facing no alternative, Leo managed to track down Douglas (as he had accidentally dialed Leo earlier) and found him working in disguise at a fast food truck, as he was still hiding from Krane. However, Douglas faked his death to fool Krane, and later broke in while Krane was doing battle with Adam, Bree and Chase. Despite turning away from evil, remnants of his past would catch up to him; Krane turned Douglas' dog, Otis, into his personal assassin and also added a doomsday virus into Douglas' Triton App.

After destroying everything and causing Donald to lose his house, Douglas then contacted him to gloat. However Chase reveals he was only playing along, and the process is actually some useless files. Douglas revealed the program was complete and now he could take control of them. Now let's go home!

In reality, though, he was kind of hoping that they'd say yes.I knew that she probably wasn't going to tell me if Leo was okay.

Aggie and Chase are dating, and Adam and Roxy are getting closer.The Lab Rats finally get to go to college, and for once, they'll be able to live a completely normal life. Once together he claimed he was not really that evil and tried to corrupt Chase to his side, playing on Chase's problems with his family not giving him his deserved credit, something which he claimed to understand, and also promising to give Chase all his siblings powers as well as his own, explaining as Chase was the youngest, it meant that by the time he built him, he understood Bionics well enough to give him greater upgrades; however Donald took him away before he could.

Donald: I've realized that everybody deserves a second chance... even you. Douglas: Where'd ya get the airbag idea? And now? Donald Adam Davenport (born January 23,1975) is the step-father to Leo. He appears to be partial to the following agenda of building bombs, invading small countries and robbing elderly woman and showing no remorse for this (although these admitted actions were not carried out within this particular order).

Wait, wait, wait! Douglas: She what?! Douglas: Krane and I use to be on the same page. However Marcus still casually took down Leo's suit, revealing a series of blades he planned to cut him open. Meeting up with him the next day, he agreed to give Douglas another chance and let him stay with them. Donald never realized that Marcus was Douglas' son until he was ambushed by them in his lab. However, knowing robots would burn out quickly, he went behind Donald's back and genetically made three humans, then implemented the Bionic technology into the children. It was revealed that Douglas was the rats' real father and they were going to be his bionic soldiers for mass destruction, but Donald adopted them to save the world instead of destroying it.

Chase: But you can't throw your own brother out on the street.

Douglas: I wouldn't call it porcupine hair. Douglas stays with the team while Donald is visiting Tasha, in preparation for their daughter's birth.

As the two of them were forced to try and find the flaw, after some more bickering, Douglas found the problem - one line of the code was faulty.

But then Donald kicked the remote out of his hand, onto the platform above. Leo managed to smuggle him into Donald's lab, where he made one and gave it to Bree. Douglas saved us from Krane. In "Sink or Swim" he arrives at the cargo ship Adam, Bree and Chase are hiding on, and posing as Donald appears to save them. So as soon as you apologize for all the things you've done to hurt our family, and... say that I'm better than you, maybe you can come stay with us for awhile.

When they wake up he reveals he's now working with Later Douglas hacked them again, this time however to warn them about Krane, who had now gone completely insane and made himself unbelievably powerful. Douglas Davenport is the tetartagonist of Lab Rats.He started out as an antagonist who dedicated his life to vengeance and destruction, but after Sink or Swim, he developed a change of heart as he saved Chase Davenport, Adam Davenport and Bree Davenport from Victor Krane and afterwards helped Bree get bionic again.