- Lizzy Greene as Dawn Harper
- Casey Simpson as Ricky Harper
- Aidan Gallagher as Nicky Harper
- Allison Munn as Anne Harper
- Brian Stepanek as Tom Harper
- Kyla Drew Simmons as Mae Valentine
- Sean O'Donnell as Elijah
- Pilot Rose as Danielle
- Brianna Reed as Marcia
- Mishka Calderon as Amber
- This episode will be the series finale, marking it the final episode of Nicky, Ricky, Dicky & Dawn.
- Nickelodeon cancelled it, along with the other live action series, School of Rock. It is often that Nickelodeon Live Action series’ get cancelled after the four season landmark, usually consisting of around ninety to one hundred Episodes.
- This was the last episode filmed of Nicky, Ricky, Dicky & Dawn.
- The title can be also referred to "Goodbye NRDD" as referred to by the cast.
- Pictures of this episode have been leaked by Kyla Drew Simmons, who portrays, Mae Valentine, and, Aidan Gallagher, who portrays, Nicky Harper.
- The title "Lasties with Firsties" alludes to it being the finale episode.