Who is Santa?

Lynettea just came back from the shops and said that Santa may have something for me.
Who is Santa?
I don't want any more strangers coming into the house. The last week has been enough for me.
I think I have a lot of things already. What I need is a behavioural transformation for Lynettea. Maybe he could bring me that.

'You will be good! You will obey Sasha's orders!'