Avictorian ghost. He can be seen wandering streets with a troubled look on his face, as if he was longing for someone.
He either was a painter or met a painter from the streets. Hence the color changes on his hair- his feelings match the colors he or his lover used to express specific emotions on his artpieces.
Pic: SotC by Gramshaw (1881).
Possible theme: Freezington (PKMN)?