Here is what we know so far about the new entry man:
1. He's the watch villian that's killed Rachit. Atharva just found his body and locked him in the closet but someone else actually killed him. It is this guy cause no more new entry villian will be introduced. Sampu also knows him and is sacred of him. So here's another thing - he can get info from Sampada abour all AN people.
2. We don't know if kid is his daughter and the hamshakal of Kalyani is his wife. I personally don't think CVS will do third angle cause they just ended Rachit and Kalyani is too young to play 7 year olds mom.
3. Since he is the killer of Rachit, he could be Rachit's family member who killed for property and money. Or someone else that has dhumani with AN people to wanted to frame Anu. He doesn't wanna be caught for the murder so that's maybe why he's here to cover tracks.
4. Since Kalyani has said she will now look for donor, I think she will take his help. He will come offering to help find a donor for Pillu.