Cool Owl Shirt

The Cool Owl Shirt is a T-shirt that was once owned by Steve Yamaguchi before it was stolen by Benjamin Krupp. It first appears in "The Worrisome Wedge of the Water Warmongers."

The Epic Tales of Captain Underpants
In "The Worrisome Wedge of the Water Warmongers," Mr. Krupp picks out a green owl shirt from Gooch's backpack. He tries to put it on, but he squirts sunscreen on his eyes. Later, Gooch realizes that his owl shirt is missing when the rest of the members of Lake Summer Camp Camp prepare to attack Camp Lake Summer Camp.

In "The Bizarre Bout of the Beastly Barfilisk," Mr. Krupp is seen wearing Gooch's cool owl shirt when getting salami from the refrigerator.

The Epic Tales of Captain Underpants in Space!
In "The Confusing Crisis of the Conniving Captive," Mr. Krupp is seen once again wearing Gooch's owl shirt in bed.