He has a reserved demeanor and has little intention of getting close to mortals. Xiao is unfamiliar with many human customs and societal norms, often finding them strange, childish, or pointless. To others, he can come off as distant and intimidating. He is also revealed to be a strict yet effective teacher..

Vigilant, Intimidating and Reserved.

Albedo is the Chief Alchemist and Captain of the Investigation Team of the Knights of Favonius. 
He is very well known for his advanced take on Alchemy. 

Calm, Collected, Talented, and Kind. 

Intelectual, Bold, and strong enough to back it up easily..

Now known as The Wanderer…

He is a young man who is a serious-minded student who firmly upholds the rules written by the Queen of Hearts. While a top student, he is easily angered and just as strict with others as he is with himself.
He accepts the fact that not everything has to be perfect, and works to find compromises with rule-breakers instead of immediately punishing them.