Red Eye, also known as The Highway Demon, was a demon in Enamel City that gained the attention of Lady (She chose the name, jackass), Dante, and the Highway Department by killing human motorcyclist racers and the Devils Nest Leader's brother. It was consequentially killed by Lady with the assistance of Dante.

(God, the anime has some seriously original and cool demons. Or maybe I'm just biased)

(Also its my first bot!)