cute monster. happy halloween. smiling head face with teeth, ears. blue silhouette monsters. cartoon kawaii funny boo character.

monster face head icon set halloween silhouette doodle sketch cartoon vector flat lined line contour tshirt shirt cute eye scary alien animal print fang horn baby background boo card party character child comic decorating design fun funny happy holiday humor kid kind mouth spooky tooth teeth pink white monster halloween smiling ears blue monsters kawaii character childish collection t-shirt design background