Kasumi

Jaime felt a burning sensation on her shoulder and ran back. There was a giant burn in there and it hurt like hell. She started to perspire. Sigh, someone who was clad in flames was really a bad matchup for her. Just now, instead of hurting Leon, she was the one hurt by the flames protecting him. Every boss was designed so that there is a way to beat them.

[Fire Lord] Leon was the initial boss. He was supposed to thin the herd which were the students. That was why he was clad in flames and also had a bunch of AoE attacks: if you wanted to defeat him you had to be using ranged attacks.

White fireballs appeared behind Leon as he had a confident smirk on his face. Jaime was about to be hit when the ground below her give in and she fell to the first floor.