Grim Adventures of Billy and Mandy

Season 2, Episode 13
Absolute power corrupts Irwin absolutely when Billy sells him Grim's scythe by mistake.

Season 2, Episode 11
Billy's Dad regales Grim and Mandy with tales of Billy's mental prowess. Which should only take a few seconds, but we drag it out a bit.

Season 2, Episode 9
Billy, Grim, and Mandy visit a closed amusement park attraction and find out why they should fear the future.

Season 2, Episode 7
Grim brings Billy's Dinobonoid toys to life so Billy can say his final goodbye, but they aren't quite ready to be outgrown.