Well-meaning but clumsy father obsessed with creating perfect family vacations.
Clark and Cousin Catherine share a familial bond through their marriage to Ellen's relatives.
Clark is connected to Aunt Edna through his wife's family lineage.
Clark faces legal and moral scrutiny from law enforcement.
Clark relies on the Mechanic's technical expertise to restore mobility.
Clark's desperation leads to a direct confrontation with park authority.
Explore the full interactive character relationship map of National Lampoon's Vacation