All characters are able to learn Ruin: * Lightning at Stage 1. * Sazh at Stage 3. * Snow at Stage 1. * Vanille at Stage 7. * Hope at Stage 7. * Fang at Stage 5. Commandos deal slightly more damage with melee than with magic if their strength and magic stats are equal, which is why when attacking a solitary target, the AI controlled Commando will always favor Attack over Ruin unless the opponent is more resistant to physical attacks than to magic. If the target's physical and magical vulnerabilities are not currently known, the Commando will always use Ruin first, then the remaining commands will be Attack. The exception is if the Commando has a significantly higher magic stat than strength, like Hope, Attack will be the first move followed by Ruin.