Kimmy Gibbler (Andrea Barber) inFull HouseandFuller Housemay not have been a Tanner by blood, but she was always a part of theTanner family tree. Throughout the franchise, her immediate family’s context has been ambiguous as they were always mentioned as an afterthought. However, Jimmy Gibbler’s (Adam Hagenbuch) arrival inFuller Housecaused more confusion with Kimmy’s family tree, as he was never introduced as Kimmy’s brother inFull House.
Following the original show’s ending, the young cast ofFull Houseages inFuller Houseas they take on challenges in their extended family. Even though Jimmy stayed until theseason finale and ending ofFuller House, the plot hole regarding Kimmy’s family tree never got the closure it needed. However, there was a reason why producers added Jimmy toFuller House, despite making an already big plot hole even worse.

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As revealed in aFuller Housewatch-back podcast,HowRude,Tanneritos!,FullerHousestar Barber stated that the producers wanted to rhyme Jimmy with Kimmy, which is why he was added to the lineup (viaPeople). Barber also revealed she was worried about the impending backlash to Jimmy’s arrival, due to the already confusing plot hole regardingKimmy’s family retcon inFuller House. Jimmy’s casting and addition ignored Kimmy’s other siblings, including her older brother, Garth, as they were never introduced. Although Jimmy was never created to replace Garth, it is unknown what happened to him, creating further issues for the story.
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Fuller Househad the opportunity to revisit Kimmy’s roots, asKimmy was central to theFull Housesequel. With Kimmy starting her own family in theFull Housesequel, the producers had the opportunity to clear the confusion regarding Kimmy’s family tree by finally introducing the viewers to Garth and Kimmy’s unnamed sisters instead of keeping them as a mystery. Jimmy’s introduction inFuller Houseonly added tothe confusion regarding Kimmy’s family tree,since there were still unanswered questions and missing context regarding Kimmy’s brother Garth and her sisters.

Full Houseis available to stream on Hulu.
Jimmy’s introduction toFuller Housealso sheds light on the continuity error that the franchise has had issues with. InFull House, Kimmy stated thatshe had never had a younger sibling, which made Jimmy’s introduction even more unexpected. Essentially,Fuller Housecreated a character without revisiting Kimmy’s family tree, as there were already important connections in her family tree that were part of Kimmy’s arc.Jimmy’s addition made Garth and the sisters' absence even more ambiguous, as it only led to more questions about why they never made an appearance, but Jimmy did, and why Jimmy was never mentioned.
There Were Many Differences Between Kimmy’s Brothers In Full House
The one key differenceFuller House’s Jimmy has toFull House’s Garth is their age. As established on the show,Garth was Kimmy’s older brotherwho could never do wrong, whereas Jimmy was Kimmy’s younger brother. This shows an important plot difference as it highlights part of Kimmy’s family tree that actually makes sense,despite manyplot holes inFull House. As Jimmy is younger than Kimmy, that in turn also means that Jimmy is younger than Garth, showing that the family timeline adds up.
It was revealed in the second season ofFull Housethat Garth moved to Reno before returning to San Francisco to claim unemployment checks.

Jimmy and Garth both have similar problems inFull House, asGarth and Jimmy’s existence in Kimmy’s family tree changes throughout the franchise’s run, complicating the family tree. Garth is more present than Jimmy in Kimmy’s family tree inFull House, as there is little context surrounding his character and no context on Jimmy. However, Jimmy’s debut inFullerHousemade him a bigger presence than Garth, as Jimmy appeared and chose not to talk about his brother. This shows that the brothers have similar problems, as they fulfill the same role in Kimmy’s family tree.
Why Kimmy’s Full House Family Tree Is So Confusing
Kimmy’s Full House Family Tree Has A Continuity Problem And Other Complex Issues
Kimmy’sFull Housefamily tree is confusing because of the missing context around all her siblings. While there is limited background on Kimmy’s sisters and Garth,Jimmy’s background is even more complex, since he never existed untilFuller House. This inevitably creates afamily plot hole inFuller Houseas there was some mention of the absent siblings but little context, yet none of Jimmy, who appeared on the show.
Kimmy’s inconsistentFull Housefamily treeunderstandably creates uncertainty around the characters. As the producers and Barber herself said, Garth being in foster care and the Gibblers being a foster family could be the reason why Kimmy’s family tree is erratic, as “Maybe the Gibblers took him in as an older teenager”and “Maybe he was adopted.” As the foster family storyline is not confirmed,this theory does little to officially fix the plot hole Kimmy’s family treecreated in her story, but it is some sort of explanation.
Unfortunately,Full HouseandFuller Houseconcluded, which means that Kimmy’s plot hole regarding her family tree can never truly be solved. Instead, the many inconsistencies in Kimmy’s family tree remain the subject of speculation, with little direct evidence to support the theories around why and how Jimmy Gibbler even exists. Despite the plot hole, it is undeniable that Kimmy and her family inFull HouseandFuller Househave one of the most heartwarming family dynamics that sitcoms have ever witnessed, as the bond that they share makes the show popular and lovable.