"Irreplaceable" is the 52nd and final episode of The Replacements.
Todd and Riley come home early from school to find out that their parents have been replaced with two "perfect" parents. Todd and Riley think Conrad is out to get them, so they go with Tasumi, Shelton, Jacobo, and C.A.R. to Fleemco Headquarters to find out why. They soon find out that Doctor Scorpius has kidnapped Dick, K and Conrad and has taken over the company!
- C.A.R. is quick to point out the idiocy of Conrad's choice of substitute parents - a daredevil and a secret agent.
- Additionally, unless Conrad arranged for the "Fleemco ad" in the theme song to be placed where Todd and Riley could find it, the opening of the show is either retconned or a lie.
- After 2009, most of the Disney Channel's later reruns of this episode mistakenly showed the third act in place of the second act, resulting in the third act being played twice.
- Despite this, the series is available on iTunes with the second act of this episode intact.
- Tasumi is shown to still have her battle armor in this episode, despite having thrown it away at the end of "Tasumi Unmasked".
- She either went back to retrieve it or had an extra suit of armor.