Wonder Dog is careful not to cut himself on the broken glass[1]

Glass was a transparent substance made from sand.[2] that was a non-crystalline solid. The most common form of glass was the glass used for windows, and drinking cups,[3] as well as eyeglasses.

Glass was the one substance that Mr. Mergen's chemical solution was unable to have any effect on.[4]

Noah Tall and Twisty placed the Krim family in a glass box when they kidnapped them.[5]

According to Mr. Vanderbulge, the glass container that his sapphire was kept in was impervious to bullets, heat and drills.[6]


  1. As seen in The Baffles Puzzle.
  2. As told in Battle of the Gods.
  3. As seen in The Ultra Beam.
  4. As seen in The Baffles Puzzle.
  5. As seen in The Balloon People.
  6. As seen in Gulliver's Gigantic Goof.

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