[quote=@AliceInRedHeels][/quote]
[quote=@vietmyke][/quote]

 It is a one hand weapon but he can use it with both hands for a stronger hit.

Not sure if that is called baby hammer or not.
 The war hammer in my idea should be somewhat lighter than a sledge hammer. ( so lower than 4.5 kg or 10 pounds)
He tends to swing it horizontally as often as vertically. The weight shouldnt be too high for that...I think. 

Added the explanation for the personality. Will do another round of checking the grammar and spelling tomorrow. So I see the mistakes easier.