Herbicidal Maniac: After Billy messes up his yard with a lawn mower and is affected by Grim's scythe, Mr. Skarr becomes a green creature who turns things into plants when he touches them. He wants to kill Billy for ruining his yard although he made the plants grow back in his garden and won an award for being a good neighbor.
Chaos Theory: Billy, Mandy, Grim and Irwin are at Costmo and they notice that there is less chaos. The cause is that Hoss Delgado and Eris are dating with each other. Now Grim, Mandy, Irwin and Billy try to find a way to break them up.