They all love a good fight in Hollywood, and Lauren Cohen certainly got a BIG one today. 

The Walking Dead actress has moved onto the big screen and to promote her upcoming horror flick, The Boy, she appeared on The Ellen DeGeneres Show.

While she was in the middle of telling Ellen about her new super-scary flick, an unexpected surprise popped up out of the blue. 

Her scream was probably heard outside of the studio, but hey, it was all in good fun. You might even get a fight yourself!