The dynamics I have for them changes according to how I feel but my main one is a found dadson type relationship, that Dottore groomed and molested scara when he was younger and innocent. He didn't know what was happening but knew it felt good and grew attached to him, and saw him as his parental figure. When betrayed he became cocky and bratty just like a son in his teens, trying to push dottore away, but still craving him. Scara knows he belongs to dottore and fails to break free from his grip, and not until long dottore will revert scara back to the innocent little boy puppet he was, his heart sewn together by his father's strings