In the film Kieran plays Fuller McCallister, the younger cousin of the movie's lead, Kevin McCallister, who gets accidentally left home alone at Christmas when his family leave.
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Is Macaulay Culkin's Brother In Home Alone
Kieran Culkin got a big surprise when he watched Home Alone for the first time! The 37-year-old actor and younger brother of Macaulay Culkin appeared in the beloved 1990.