One possible answer could be a procrasintator - a person who always puts off what they need to do.
That person could be described as two-faced or duplicitous, meaning they are deceitful or insincere in their interactions with different people.
call them right.
An Anchor
No. "Something" means what it says, a "Thing". "Someone" means a person!
Someone who always keeps his promises could be called reliable, trustworthy or dependable.
Lucky.
it is something that a person says when they eat brocily
He has something to hide.
We say they repeated that word
An editor.
you may be able to call this person a blackmail victim.
if it was something bad yea but if not maybe