A participant in costume uses a mobile phone at a Halloween event in Kawasaki, south of Tokyo, Japan October 29, 2017. (Photo by Kim Kyung-Hoon/Reuters)

People wearing costumes walk during Halloween in Sierra Madre, California, U.S., October 31, 2017. (Photo by Mario Anzuoni/Reuters)

A woman takes a selfie with the a cafe-staff dressed in a halloween costume at a cafe in Bangkok on October 23, 2024. (Photo by Manan Vatsyayana/AFP Photo)

American actress Drea de Matteo in Halloween costume in the last decade of October 2025, (Photo by Ashlee Krutzfeldt)

Meet the snake-mimicking butterfly (Dynastor darius). While this slick master of disguise may show off impeccable imitation skills, prior to taking on this serpentine appearance it was simply a furry, nondescript caterpillar, and it looked pretty much how you would expect any old caterpillar to look.

American actress Sydney Sweeney in the second decade of October 2024 gets into the Halloween spirit baking cookies and making a Halloween cookie house. (Photo by sydneysweeney/Instagram)

Models use their phone lights during a power outage to put on make-up before the start of the third Ouaga Fashion Week in Ouagadougou, Burkina Faso, Friday May 13, 2022. Ouaga Fashion Week returned to the Burkinabe capital after a two year COVID-19 related break. (Photo by Sophie Garcia/AP Photo)

Sophie Weissenberg, of Germany, grabs her ankle after being injured while warming up for the women's heptathlon 100-meter hurdles at the 2024 Summer Olympics, Thursday, August 8, 2024, in Saint-Denis, France. (Photo by Ashley Landis/AP Photo)