1. A hero is never late or early, they always arrive when everyone else is on the brink of defeat.
2. Clothing malfunctions always happen to female characters: sooner or later...
3. Yelling extremely loud is the best way to increase power.
4. A slap to the face of a male character is inevitable.
5. Flashbacks before, during and after a battle are always appropriate.
6. It's customary for opponents to stare at each other for a moderate amount of time before engaging in battle.
7. Wearing glasses = intelligence.
8. Siblings that fall in love are usually not blood relatives.
9. Children/teenagers have enough power to save the world and enough wisdom to influence people's views.
10. Evil's never defeated for good: it returns after an opportune time.