Meg

In Inside Out, Meg is Riley Andersen's childhood friend and the primary basis for Riley's Friendship Island. However, after Riley moves to San Francisco, she subsequently cuts Meg off during a video call, marking the collapse of Friendship Island.

In Inside Out
Meg is first seen when Joy showcases Riley's Core Memories, and the one with Friendship Island involves her and Riley, walking together hand in hand. In addition, Riley and Meg share many more fond memories in Minnesota, including being present for the "brain freeze" segment, as well as a segment where Riley laughed so hard milk spilled out of her nose. In addition, Riley and Meg played on the same junior hockey team, Prairie Dogs.

However, after Riley moves to San Francisco, she and Meg can only keep in touch with each other via video chat. In what is presumably their first video chat since the move, Meg pesters Riley with loads of questions about San Francisco, before showcasing who replaced Riley in Prairie Dogs, known only as "the new girl". However, when Riley's emotions see her, they declare that Riley has been replaced as a friend, and thus, Riley cuts Meg off and Riley's Friendship Island collapses. While it is restored by the end of the movie, it is unclear if Riley and Meg ever got in touch again.

In parodies
As the Riley Andersen's Intercultural Exchange series universally replaces Meg with a more recognizable parody character such as Leopold Slikk and Adolf Hitler, other than in nickname and memories, Meg is yet to appear in any Inside Out parody.