A romp through the nonsensical realm of subpar 80s animation with a special focus on the best-worst among them all: Jem and the Holograms
https://www.jemgirls.com/
episode 7: Charmed, Season 1 Episode 7: "The Fourth Sister"
Logically speaking, if two is company, and three's a crowd, then "four" must be even worse form of grouping. Maybe "four's an unbearable teen with weak eyebrow game who makes everything kind of worse"? Just spitballing here, based off of what we get when we add another Halliwell sister to the mix.
Unfortunately, no, we are not yet graced with the presence of Rose McGowan, the future fourth sister. Instead, this early on in the series (and way before Prue gets killed off), we get the far inferior Aviva.
Who is this kid? Why is she up in the Charmed Ones business? What does Aunt Jackie have to do to get rid of her? And where in the universe did Aviva's other eyebrow go? Because at least one of the eyebrows on Aviva's face is a transplant or orphan or something.
We, as per always, will discuss these burning questions at length in yet another installment of the Charmcast by the Immortal Frenemies (but also still the JemGirls)