Startled in the night

My shadow does not match my sense of self
 
It's stature somewhat stockier than I recall ever having been
 
Nose and ears a little big
like an ogre or an elf
 
Not like any regular portrait of me that I have seen
 
 
It appears to move so ever slow than my muscles ever did
 
And there is a shine and twinkle from the corner of its eye
 
Yes I don't recall it being a duckling since I were a kid
 
A Frankenstein freak that children want make cry
 
 
When I stumble through the house
 
And pass thresholds with thin threads of light
 
I flinch to the movement of what may be a thief or mouse
 
My shadow plays such tricks as gives me quite a fright
 
 
Behind heavy brow now balding

Leans upon a walking frame

With whiskered chin protruding

I don't believe we've met that I should know his name