Cochineal Beetle

Cochineal Beetles are immune to the Confused debuff. They spawn rarely in the Cavern layer. When killed, they will drop the Red Husk, which can be used to make the Red Dye.

Trivia

 * The Cochineal Beetle is an insect, native to South America and Mexico, which is used to create the red dye known as cochineal or carmine. It is mainly used in food and cosmetics.