This has been bugging me.
A character can encounter the space, a dragon scale on the space, or another character on the same space, of course provided the dragon scale doesn't match the current Dragon King. Otherwise you have to encounter the scale.
Let's say you decide to encounter a space with such a Dragon Scale. ( a non-King scale). There's an undefeated Enemy from a Dragon card on this space. So you encounter the Enemy, and do not draw another Dragon card. Do you get to claim the scale if you defeat the Enemy?
You're doing something wrong here. Check Dragon Rulebook, page 10:
If a character encounters the dragon scale, he must draw one card from the deck that matches the dragon scale, even if there are already one or more cards in the space. The character must resolve all of the cards in the space following the normal rules (cards must be resolved in order of their encounter
number, Enemies with the same encounter number add their Strength and Craft together, etc.). This may result in a character resolving an Adventure Card from the main game before he resolves the newly drawn if the Dragon Card has a higher encounter number.
If the new Dragon Card is an Object and there's another undefeated Enemy from a Dragon Card, you may claim the scale if you kill that face-up Enemy.