On Boy Meets World, Cory (Ben Savage) and Eric Matthews (Will Friedle) have a good sibling bond; however, Topanga Lawrence’s (Danielle Fishel) sister disappears after season 1. Topanga is a bright young adult who values academic achievement and begins a long-term relationship with Cory in season 3.
While she has a sibling in season one, this character does not return. This aspect of Topanga’s family history is intriguing since she is a well-developed, uncomplicated figure who understands who she is and what she wants.
There are some hypotheses on what happened to Topanga’s sister, and it’s not uncommon for sitcom characters to leave without explanation, such as Chuck Cunningham (Gavan O’Herlihy) on Happy Days.
Stuart Minkus (Lee Norris) appeared on Boy Meets World in season 1 and was virtually forgotten until season 5. Topanga has a distinctive name in Boy Meets World, as does her sibling, but it is the only thing that stands out about her.
Nebula, Topanga’s sister, appeared in only one episode.
Nebula (Krystee Clark), Topanga’s older sister, appears once in season 1, episode 13, “She Loves Me, She Loves Me Not.” Topanga visits the Matthews home to flirt with Eric after he lectures her class about being a teenager. The Nebula appears to bring Topanga home but does not affect the plot.
While Topanga mentions Nebula in season one, the sitcom refers to her as an only kid from then on. Although strangely, Topanga was given a sister only to have her vanish, Nebula isn’t given traits or her storyline, so she’s unlikely to become a prominent character.
Her disappearance is simply a continuity mistake.
Cory and Topanga’s Boy Meets World romance may be the focus rather than her family, but it’s still odd that Nebula appears only briefly and then disappears from the programme.
There are theories that Nebula joined a cult or died, but there has been no confirmation. Nebula is an easily forgotten aspect of the sitcom because she only appears when she knocks on the Matthews’ door to pick up Topanga. Topanga only mentions her while telling Cory they should watch Nebula’s Godzilla video.
The showrunners appear to have chosen that instead of Topanga leaning on her older sister, she would be a strong, confident heroine who is an only child. It makes it logical and allows the sitcom to focus on Topanga’s good academics, connections, and personal characteristics.
The actor played another character.
Even though Nebula does not interact with the primary Boy Meets World characters and does not appear after season 1, Krystee Clark returned to the sitcom and played Valerie in season 2, episode 41, “Bad Side of the Tracks.”
Eric falls for skater Valerie, and his friend Jason (Jason Marsden) gives him a tape he can listen to overnight to improve his skating skills. It doesn’t work out, as one might expect. Eric can skate, but when Valerie suggests going to a restaurant for a date, Eric says he can’t eat because of the tape.
Clark’s second Boy Meets World character has her plotline and a more defined personality since she enjoys skating and has a possible romance with Eric. On the other hand, Valerie makes less of an impression than Nebula, and she and Eric never see one other again.