Dr. Glocken is a citizen of Bumblyburg. He only appears in "Larry-Boy and the Rumor Weed." He first appears coming out of the movie theater after seeing "The Pecking." He appears again walking through Bumblyburg. He appears last at the library, believing Alfred was a robot. When the Rumor Weed came out of the ground, he was the last to escape.
Dr. Glocken is a white onion. He wears black glasses and a purple bow tie, and has a white mustache.
- Himself in "Larry-Boy and the Rumor Weed" (cameo)
- Bruce Onion in "Celery Night Fever"