Character from one of a thousand whimsies I have kicking around.
This one is Rasa, from the figment Milliner's Tale. Milliners have the ability to create hats that hold spirits, which when worn offer a sort of half-possession - the characters gain particular strengths and attributes, but the spirit also speaks to their minds.
Here he's wearing the Buller Derby, holding an aggressive bull demon, so his legs (usually human legs) have become bull legs in addition to the horns sprouting from the cap. The bull demon would increase Rasa's temper and honor is worn for extended periods.