How would you RP a evil wyrmling?

[Yqatuba]

I'm thinking something like Veruca Salt only WORSE (at least she didn't kill people who failed to give her what she wanted).

[Klorox]

A lot of bluster, being threatening... until it realizes the PCs might be a match for it or more, then it will likely try to flee as expeditiously as possible.

[Pizza Lord]

Super-friendly, willing to help with advice about your enemies, and always offering a "Mutual Allies for the Time Being" 'discount' (so it says).
Does the same thing with your enemies.

[Cole Deschain]

A tremendously spoiled, selfish brat, perfectly willing to eat you if it thinks it can get away with it and has no reason not to...