Legend of Legaia/YMMV

Legend of Legaia:
 * Cliche Storm - And it's not a bad thing!
 * Goddamned Bats - Pueras.
 * Vera seru. They hurt-a-plenty (they do MORE damage with their special attack if you Spirit unlike most other enemies), are somewhat fast and they heal themselves. Not particularly hard, but they can be annoying, especially if they nail Noa with Bloodsucker while she's Spiriting. Oh, and they look somewhat like bats too.
 * That One Boss - Oh so many.
 * Most bosses aren't particularly difficult if you have enough levels and remember to guard and heal as needed. The two bosses that stand out are the Berserker and Xain.
 * The Berserker has extremely high attack at this point in the game and uses the Rot status effect, which makes it very difficult to attack and use Arts. Berserker also is the second boss in the game with a very hard hitting spell without requiring a turn-up to charge for the spell.
 * Xain requires that you've learned the Orb spell (a heal spell for all allies) and that you guard when he charges up his Terio Punch. Proper battle tactics will take them both down without too much trouble.
 * The Woobie - All three main characters have depressing events in their backstories, but Noa, who, among other things,, takes the cake.

Legaia II: Duel Saga:
 * Moe - Maya