Lab Rats: Bionic ??? Wiki
“Billion Dollar Backstory”
Season 1, Episode 6
Air Date

October 23, 2015

Prod. code






Episode Guide

A Girlfriend For an Android


Life of a Davenport

"Billion Dollar Backstory" is the sixth episode of Season 1 of Day of a Soldier. It aired on October 23, 2015.

Fanmade episode by Andre132.


When Spin, Bob and Mary search for a treasure under the school but they along with Donald fall in a hole, they find Donald and Douglas' mother and Donald tells his and Douglas' backstory. Meanwhile, Marcus and Sarah go on another date, causing Chase to get mad at Sarah.


Spin, Bob and Mary search for a hidden treasure under the lair. But then, Spin, Bob, Mary and Donald fall in a cave under the school. Maria, Donald and Douglas' mother, comes out. Donald then tells Spin, Bob and Mary his and Douglas' backstory.


Main Cast

  • Max Charles as Spin Krane
  • Brandon Salgado-Telis as Bob Krane
  • Skai Jackson as Mary Krane
  • Ashley Argota as Sarah Krane
  • Mateus Ward as Marcus Davenport

Recurring Cast

  • Billy Unger as Chase Davenport
  • Hal Sparks as Donald Davenport
  • Laura Marano as Maria Davenport

Guest Cast

  • Benjamin King as Dilan Davenport (Donald and Douglas's father) (flashback)
  • Isaak Presley as Young Donald Davenport (flashback)
  • Tenzing Norgay Trainor as Young Douglas Davenport (flashback)

Guest Cast from Lab Rats

  • Jeremy Kent Jackson as Douglas Davenport (flashback)

Absent Cast

  • Cole Ewing as Sebastian Krane

Mentioned Cast

  • Spencer Boldman as Adam Davenport
  • Kelli Berglund as Bree Davenport


  • Cole Ewing is absent in this episode. This is the first time a main character/Sebastian is absent.
    • Sebastian doesn't appear in this episode because, in Life of a Davenport, it reveals that he is secretly working for the president.
  • Donald and Douglas' backstories are revealed.
  • The events from Lab Rats and A Girlfriend For an Android are mentioned.
  • Chase and Sarah kiss.
  • It is revealed there is a treasure under the school.
  • Maria becomes staff in the school.
  • The reason that Maria looks too young to be Donald and Douglas' mother is because her children used a young machine to make her younger.
  • Maria finds out that Douglas is alive.
  • Maria's first appearance. She will also appear as a guest star in Lab Rats.
  • This episode is similiar to "A Tale of Two Stans" from Gravity Falls. Both has two people telling a backstory to their students. Plus, Maria was mad at Donald just like Stanford was mad at Stanley.