Henry

Approaching every situation with a constant, yet eerily cheerful expression, Henry is an unorthodox Dark Mage with a bright enthusiasm towards bloodshed and war that contrasts with the usually dour nature of the art. He is prone to fits of laughter and glee whenever carnage or the macabre is involved. He is utterly fearless as a result and does not fear death, even finding it, should it happen to him, particularly cathartic.

(Source: Fire Emblem Wiki)