Jack Skellington

A twist occurs with The Nightmare Before Christmas: The King of Halloween, Jack, wishes to take over the job for Santa, so has him kidnapped. Despite his good intentions, Jack forcefully takes Santa's mantle and the entire Holiday, making this also a downplayed and slightly oblivious case of Usurping Santa. Even worse, because he fails to consider how horrifying his Halloween-based presents are, it results in the military shooting him out of the sky.

Example of:
Subbing for Santa