The story
From Poochie, a character added to boost the ratings of the fictional Itchy and Scratchy Show in The Simpsons episode "The Itchy & Scratchy & Poochie Show", + -fication.
Etymology from Wiktionary, CC BY-SA 4.0.
Poochie-fication
Today it means: The process of adding a new character to a work of fiction, or altering characters already present, in a bid to make the work cooler or more extreme. Full definition →