This is why teddy bears are awesome:
(h/t pokoshoko on Imgur)
I couldn’t find the video this comes from, but I found an animated short about a teddy bear who fights monsters, and a short about a boy with a monster under his bed (based on perhaps the scariest two-sentence short story ever.) (Videos are embedded below.)
There is also a trio of horror shorts that has versions of both stories, and is not for the faint of heart.
These may have been inspired by a drawing by begemott on DeviantArt:
Apparently Dwayne Johnson is making a feature film based on this drawing, which could be awesome, or could be The Tooth Fairy.
Here are the videos:
This is the one that inspired the post title: