Metalheads are naturally peaceful beings. When they are in their human sizes, most of them can shuffle with humans quite easily.
Tarot is one of those metalheads. Very close in mind and appearance to a human named Marko Hietala, he is the first Metalhead Vivi met, as she was believing he was the human.
Those two became best friends. Tarot/Marko ( metalheads have two names ) is a very peaceful and calm fellow, who loves simple stuff such as going in a park and watching nature.
He is quite a loner but a good company when he is well surrounded.