Swift Master is an extremely cocky, overconfident mage, often flaunting his control over the winds & constantly looking down on or mocking/provoking those around him. Even so, he is still shown to have a level of uncertainty to himself & is easy to set off when provoked, especially hating when he's called a child or similar.

In combination with his overconfidence, Swift Master is often speaking in an undermining tone, even during combat. However, this tone & attitude of his can easily fall apart under the right circumstances.

You can find a quick preview video of the character here.