Chapter 33: Dobby, the mountain that apparates.
"Well Dobby, How did Lucius treat you all these years?"
Now, neat and clean Dobby in gentleman suit and boots replied, "Oh, Master Malfoy used to beat Dobby a lot in the beginning but something happened 2 years ago and Master started treating Dobby like Dobby was the master. Mistress Malfoy still beat Dobby though"
"They beat you because you are small and weak Dobby. Would you like to evolve and get stronger?" Alexander asked.
Dobby quickly nodded his head: "Yes, Dobby would be lucky if that can happen"
"Then let's go to my office. I'll give you a potion that will make you 'evolve'"
~Hopefully~
...
"Here, drink this and go to sleep. The changes will happen overnight. That is your room from now on" he pointed to a door at the end of the lobby.
"Yes boss"