Insectosaurus, Monsters vs. Aliens Wiki

Insectosaurus is one of the main characters of the movie. According to both The Art of Monsters vs. Aliens and character designer Craig Kellman, Insectosaurus is female. Before transforming into a butterfly with feminine characteristics, she was mistakenly believed to be male by the Missing Link. Insectosaurus was originally a one-inch (25.4 mm) grub who was transformed by radiation into a 350-foot (106.68 meters) tall monster that attacked Tokyo. She was captured in 1969 and formed a close bond

Monsters vs. Aliens (2009) - IMDb

Insectosaurus, Monsters vs. Aliens Wiki

Insectosaurus, Monsters vs. Aliens Wiki

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Insectosaurus, Monsters vs. Aliens Wiki

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Insectosaurus, Monsters vs. Aliens Wiki

Insectosaurus, Monsters vs. Aliens Wiki

Insectosaurus, Monsters vs. Aliens Wiki