"Baby Ariel" is the Halloween episode of the Nickelodeon reality series The Substitute, originally aired on Halloween day of 2020.
Plot[]
“Baby Ariel,” (Bixler High Private Eye, Zombies 2) goes undercover at a haunted house to pull off ghoulishly wacky pranks on kids visiting with the Q Youth Foundation. Using a full costume and prosthetics to hide her identity, Martin is transformed into three completely unrecognizable characters, pranking students as an apothecary shop owner who is often suspected of being a witch, a field trip volunteer and full-time ghost hunter who is desperate to finally prove their existence and a haunted house employee whose biggest adversary is a scarecrow.