There's an Insect Watching me

In my slumber
There is an insect
Whose body is that of a mantis
And head of a human
It is six feet tall
Rather tall indeed
In my slumber
It watches
It stares for hours and hours
And disappears in my wake
Does it want to help me or harm me?
That I do not know
In my slumber
The insect watches
Standing over my bedside
Never moving, always still
We all have an insect
That watches us
In our slumber