Yes, but you have to write a few thing about them in order to claim one. The things you have to write are:
Name: Age: Height: Weight: Personality: Relationships (friends, family, partners):Bio/History: How is the background image related to that character?: That's it! Once you write that on my page
here, you can have one (if they are not already claimed, that is).
Also, since they are Dreamselfy adopts, you can't sell them for points or real money, but you can give them away (which is what I do) or trade them for another thing.