The below description is taken from LEGO.com.
"Gimmie an L! Gimmie an E! Gimmie a G! Gimmie an O! Yaaay!"
The Cheerleader is perpetually filled to bursting with energy, excitement and enthusiasm. She prefers cartwheels and handsprings to plain old ordinary walking, and she waves her pom-poms around wildly whenever she talks, which is pretty much all of the time.
The Cheerleader loves to cheer people on, no matter what they're doing. Whether they're changing a light bulb, building a wall or just crossing the street, she's always there with a peppy cheerleading routine to encourage them to do their best and never give up. It can actually get kind of annoying sometimes, but her perpetual good mood and sunny smile are so contagious that it's hard to really mind.