"Guignol" refers to a type of puppet character in traditional French puppetry. It is often used to describe a funny or comical person or situation, similar to a clown or jester. Full definition
It's a complete transformation of her tactics in more ways than one — reptilian, truly terrifying, unruly and unhinged, just like this piece of grand Grand Guignol. (thefilmyap.com)
Hossein labored away as actor / director with the legendary Theatre Grand Guignol in Montmartre, then spent several years on the «legitimate» stage. (rottentomatoes.com)