who is the most fake person in the house

Don't know why but I get negative vibes from him..very very cunning..

Arya - Just as much as one could like his demeanour & would love to interact with him, people cannot easily trust him. Because he is & appears very friendly on the outside, but has his own insecurities, doubts about people behind that happy & gay exterior. At times he overthinks too much & doubts people a lot. In a jiffy, he gave hundred odd opinions about Puneet & also brainwashed Upen to agree with it. Arya is very, very cunning. He can turn anyone against anyone, all whilst he is smiling. Even his apologies to Sonali seemed fake to me, after a point..as he still continued pissing her off, consciously or unconsciously.

Upen - Definitely, has more shades to him, is unpredictable & can turn in on anyone, at any given point. He uses, people, situations to his advantage. He'll do one thing at one point & the opposite of the same, in the next. He plays situationally, smartly to his advantage & cannot be trusted.

Karishma & Soni, can already be seen making a team amongst the girls. So their alliance is also going to have them show one side, to all the housemates & turn on their political sides, when with each other. Puneet may potentially be similar as well. So cannot say, that these people are as genuine as they appear.