The Monster Manual describes an encounter with Dryads: “Travelers entering a forest might catch a glimpse of a feminine form flitting through the trees. Warm laughter hangs on the air, drawing those who hear it deeper into the emerald shadows.”
The Monster Manual describes Cambions as “the offspring of a fiend (usually a succubus or incubus) and a humanoid (usually a human). Cambions inherit aspects of both parents, but their horns, leathery wings, and sinewy tails are hallmarks of their otherworldly parentage.”
The Monster Manual describes the nothic as "a monstrous creature with terrible talons and a single great eye. When driven to violence, it uses its horrific gaze to rot the flesh from its enemies’ bones."
The Monster Manual describes the Couatl as “benevolent serpentine beings of great intellect and insight. Their brilliantly colored wings and gentle manner speak to their celestial origins.”