Harrison loves to play with Little People. What kid doesn't?
He inherited quite an impressive set from his sisters, but he really likes to play with one figure in particular, who he calls his "Wheew, Wheew!" That's his sound of a fire engine, and of course, his favorite figure is the firefighter:
Of course, you can't have a hero without a villian. And of the dozens of Little People figures that he has in the collection, this is who Harrison chose to be the "Bad Guy":