: Marcus is revealed to be an android created by Douglas, possessing all the Lab Rats' powers combined. He is seemingly destroyed at the end of the episode.
: With the bionic teens captured and stripped of their powers, Douglas prepares to use the Triton App to gain total mind control over them. Leo, vindicated after his long-standing suspicion of Marcus, must team up with Eddy to launch a rescue mission. Key Revelations & Character Developments [S2E14] Bionic Showdown: Part 1-2
: The stress of the battle leads to the unlocking of new "hidden" bionic abilities: Adam : Unlocks his Blast Wave ability. : Marcus is revealed to be an android
: Douglas Davenport, Donald’s long-thought-dead younger brother, returns to kidnap Donald. He uses Donald as bait to lure Adam, Bree, and Chase into his lair. Leo, vindicated after his long-standing suspicion of Marcus,
: The team debuts their updated mission suits in this episode—Adam and Chase's are cloth-based, while Bree’s is a spandex "wet suit" material. Production & Trivia
: It is revealed that Douglas Davenport is actually the biological creator and father of Adam, Bree, and Chase. Donald is their uncle, who took them to protect them from Douglas’s plan to turn them into soldiers.
" Bionic Showdown " (Season 2, Episode 14) is a pivotal one-hour special in the Lab Rats series that originally aired on August 5, 2013 . It serves as a major turning point, revealing the true origins of the bionic trio and introducing their primary antagonist, Douglas Davenport.