EX Skill

EX Skill (EXスキル) is a system from the Mega Man Zero series.

The EX Skill system was introduced in Mega Man Zero 2. When Zero fights a boss while having rank A or S (or with a weather favorable to the boss in Mega Man Zero 4), the boss will gain an extra technique to make the fight more difficult (such as Aztec Falcon's Lightning Fall and Hyleg Ourobockle's Joint Laser). Defeating the boss will teach the technique to Zero, allowing him to recreate it with his weapons.