what object is ugly on the inside and beutiful on the ourside?

The queen in the story "Snow White"? Similarly, any other female lead in a story or play who is beautiful but villainous.

Some flowers are beautiful but are also poisonous or dangerous, for instance the Venus Flytrap.

An object that is often described as ugly on the inside but beautiful on the outside is a fruit called the durian. The durian is known for its distinctive spiky exterior and powerful odor. Many people find the smell of a durian to be unpleasant, earning it the nickname "the world's stinkiest fruit." However, despite its strong smell, the durian is highly regarded for its delicious taste and creamy texture. To answer this question, I researched objects that fit the description of being ugly on the inside and beautiful on the outside.