Daniel Stern as Marv Merchant
Every villain has their side-kick partner in crime. Marv completes the burglering duo. Not as quick-witted as Harry, he is mostly just back up in their operations. However, he is loyal to his partner in their attempt to access the McCallister home.
During every robbery, Marv made a point of leaving taps running in the home with clogged drains. This coined their name the “Wet Robbers”. Unfortunately for them, this time it came back to bite them, leading to their arrest with the police.