Answer:
The negative hero in each story
You feel this sensation when you are dehydrated.
Blue lives in the blue house, Mr. Pink lives in the pink house, and Mr. Brown lives in the brown house. Who lives in the white house?
What word becomes smaller when you add 2 letters to it?
What goes trough your head but you forget it like 3 days after?
People take me on walks and I run and have fun. What am I?