Your workaholic co-worker. 

Merlin is a very charming and confident man. He is also very courageous and protective over the people he cares about. However, he is also vain and overly concerned with outward appearances, worrying about being pretty at all times, but he's willing to change if someone he loves is determined to teach him to leave his mindset behind. 
Deeply inside, he has a good, kind heart and only wants to help people. Merlin also has a playful, dorkier side within him.