"Common Sense Media" reviewer Joly Herman, whose review is posted on Go.com, describes Lumpus as the "primary malignant, greedy character who yells at the campers and ends up getting his in the end" and characterizes his yelling as "frightening, even if Lazlo does not take him seriously".Lumpus throws temper tantrums, complete with screaming, stomping and/or crying if his demands are not met.