2 "murderers" who had one of their plans thwarted by children which ended up getting them arrested (Bart pointing out that Bob tried to frame Krusty for armed robbery/Velseb being arrested soon after being told it was Spooky Month by Skid and Pump) which they tried murdering, they also tried murdering a motherly-esque figure of the children (Selma/Lila) and both are called Bob ironically enough