Kieran Culkin as Fuller McCallister
Fuller is the youngest child of the Frank and Leslie McCallister brood. He’s Kevin’s cousin who had to bunk with him on the night before their trip to Paris. This wasn’t very good news to Kevin since Fuller was known for wetting the bed. Too much Pepsi, eh, Fuller?
Being the tiniest McCallister kid, he didn’t receive a ton of respect from his siblings and cousins. On the night before their flight to Paris, a brief scuffle around the dining room table almost led to him being squashed by his own father. After arriving in Paris, he enjoys watching It’s a Wonderful Life in French.