Tumbleweed is a short and diminutive caveman with fair skin, white hair and a white mustache. He wears a red cowboy hat and a dark navy-blue and black tiger-striped loin cloth.
- "Droop-Along Flintstone" (only appearance)
- Despite being Tex Hardrock's son, Uncle Tex regards Fred as his sole hair in most of his appearances, either due to a continuity goof, Tumbleweed not needing an inheritance due to his own wealth or Tumbleweed possibly being disowned.
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