HP+20%

In Final Fantasy VIII, "HP+20%" is a character ability that increases the maximum HP of a character by 20%. This ability is learned through Guardian Forces (GF). Specifically, players can learn this ability by equipping certain items or by leveling up their GF. Once acquired, the player must equip this ability in the character's ability menu for it to take effect. "HP+20%" is a character ability, not a command ability, which means it works automatically in battle and has a lasting effect. There are other HP-boosting abilities available in the game, such as HP+40% and HP+80%, which can provide further increases in HP. Generally, players will prioritize learning and equipping higher percentage HP boosting abilities. Though HP+20% is less impactful than these higher-level abilities, it still provides a useful boost early in the game or when resources are limited. In addition to the percentage-based HP boosting abilities, there's also a 'HP Bonus' ability, which gives additional HP when leveling up. It's crucial to know that a character can only equip four character abilities at any given time; so the player must pick and choose accordingly.