I know I often portray Blue to be a terrible person, but he can be very sweet sometimes.
Here's a few settings with him being a cute kid, with his kings lovingly caring for him.

1- Nicholas combing Blue's hair because he overslept and needed to dress faster so that the other kings could eat breakfast.

2- Elizabeth washing Blue's hair, using her own shampoo because he ran out of his own. He loves the floraly smell of it.

3- Samantha made him a bite-sized cake and he's in awe at how cute it is!