Manic is essentially a doppelganger of his Mobius counterpart and is so identical to his in both anatomy and attire.
Manic has a same personality as his Mobius counterpart, albeit darker and more self-involved. He was even more greedy than his Mobius counterpart and enjoyed collecting vast sums of wealth, but unlike his counterpart he taxes rather than stealing and has nothing to prevent him from doing this as his siblings do not try to stop him.
After having seen how the people suffered under his and his siblings' corrupt rule, Manic had a change of heart. Developing sympathy for his people, Manic resolved to become a kinder and more generous ruler over his people.