|Louise Walker looking at Katie.jpg|
|Family||None known other than Trout Walker (grandfather)|
|Friends||Mr. Sir, Dr. Pendanski|
|Enemies||Katie Sandow, Stanley Yelnats IV, Zero, Zig-Zag, All D-tent boys|
|Dislikes/Hates||Digging, especially on Christmas|
The Warden (Louise Walker) (or better nickname The Warden) is the (hidden) main antagonist in Katie, Emily, Wallace and Gromit: Holes. She is the granddaughter of Trout and Linda Walker.
The Warden is shown to have been digging holes growing up and does nothing else trying to finish the work of looking for the treasure of Kissin' Kate Barlow.