The Schlubs (S05E09)

While binge-watching "My Troubled Pony," Grim discovers from Mandy that the show has been abruptly cancelled without a conclusion. Determined to create a finale, he hatches a plan to harvest the "Schlubs," whimsical beings residing in Billy's backyard, transforming them into gold. However, he must navigate through both Billy and the feisty Schlubs, including a standout female character reminiscent of Smurfette. Just as Grim believes he has captured the creatures with his scythe, he finds out that Mandy has already claimed all the gold for herself, leaving him empty-handed.