Monster House

Monster House Plays The Green Monster in Halloween is Smaug Night (CartoonNetworkandBuenaVistaFan360 Style) and Halloween is Smaug Night (TomandJerryFan368 Style)
He is a green monster.

Monster House Plays The Giant Snake in The Nightmare Before Christmas (CartoonNetworkandBuenaVistaFan360 Style)
He is a snake.