In the movie, whoever she kisses kinda just turns green and falls over. In the games, one of her moves was to grab an enemy, and lean them over and pull them into a kiss that lasted about 2 seconds, then they explode and die. Since they're lego. I think she also has a blown kiss attack in lego dimmensions, or one of the newer lego batman games, not sure.
Have a nice [time of day it is when you're reading this]! <3