Who is Robert Young lookalike in zero water ad?

The Robert Young lookalike in the Zero Water ad is actor and comedian Mike O'Malley. O'Malley is known for his work on television shows such as "Yes, Dear" and "Guts," and he has also appeared in various films and commercials. His resemblance to Young adds a nostalgic touch to the advertisement, which emphasizes the product's effectiveness in providing clean drinking water.