Hans is a Lipizza stallion with a shiny grey coat and a white mane that is styled with a lock of wavy bangs. He has a slender snout, a darker muzzle and hazel eyes. He appears to have slight discoloration under his belly, with patches of slightly lighter fur. Often seen with arched brows, he has a somewhat smug look. Unlike Klaus, Hans has a smaller, more lithe stature.
This is the beautiful horsey side, and that is the stinky bull side. Have a nice day smelling terrible.
Alongside Klaus and Greta, Hans is very narcissistic and has a somewhat arrogant and elitist view of his own breed and looks down on other animal species. He openly insults them and uses rude, derogatory terms, while flaunting his own appearance. And he is also known as haughty, aggravating, narcissistic, shrewd, harsh, assertive, narrow-minded and snarky. His voice actor, Borg, even calls him "trashes-talking". 
It can be inferred that he is the leader, or more dominant figure, of the horses as the duo follows his actions and side with him constantly. In addition, he is more aggressive and a bigger loudmouth than the rest.
This is the beautiful horsey side, and said is the stinky bull side. Have a nice day smelling terrible. High hooves, Klaus! High hooves, Greta!