Merlin has the basic appearance of a fluffy black cat.
Merlin is a loving black cat who enjoys spending his time roaming about during the season of autumn. As his owner is very busy during those few months, he goes around, finding kind hearted witches to accompany. He finds the most kind hearted ones the most enjoyable to be around. He loves snacking on people's candy, and somehow never gets sick. He often stands up for those who are timid or unable to protect themselves, hissing and swiping at them to fend them off.