Inks on paper
Peacock. According to Greek Mythology, Hera created the Peacock from the hundred-eyed giant Argus, killed by Hermes at Zeus command. As last tribute for his loyalty the goddess placed his eyes on the feathers of the bird’s tail.
Rampant horse
Cerberus. 
According to Greek Mithology, he is the hound of Hades: a multi-headed dog that guards the gates of the Underworld to prevent the dead from leaving. Usually described as having three heads, a serpent for a tail, and snakes protruding from multiple parts of his body. His capture is one of Heracles' twelve labours.
Roman Soldier and horse 
Tritons and trident
Tritons