Here is a list of mythical creatures beginning with this letter and I am constantly gathering information from each continent and continually updating.
Alseid (Greek)
In Greek mythology, Alseids were the nymphs of glens and groves. Of the Classical writers, the first and perhaps only poet to reference alseids is Homer. Rather than alseid he used the spelling alsea. Alseid see the forest as an individual and a friend. They are suspicious of outsiders who do not share this view.
Lost travelers who demonstrate deep respect for the forest may spot a distant alseid’s white tail and chase after it as it bounces toward a road that leads out of the forest. Disrespectful strangers may follow the same tail to their doom. Male alseid have antlers growing from their foreheads.