Cory: Morgan, long time no see. Morgan: Yeah. That was the longest time out I've ever had.
—Cory and Morgan Matthews
Morgan Matthews is the younger sister of Cory and Eric, the older sister of Joshua, and the only daughter to Amy and Alan. Mainly used for comedic purposes, the character of Morgan is usually annoying to Cory, and seems closer to Eric. She was initially played by Lily Nicksay, but was replaced by Lindsay Ridgeway in season 3. Throughout the series, it becomes clear that Morgan is a good singer, as shown in Better Than the Average Cory and Shallow Boy.
Appeared in the Girl Meets World finale "Girl Meets Goodbye" and assured her nephew Auggie that even though he is the youngest member of the family, his concerns are being heard and being taken into consideration. (In a surrealistic twist, both Lily and Lindsay appeared in the GMW finale as Morgan)