Prehand descriptions.
Hero:Has a really tight image vs both villains.
Villain 1:Is a regular,with pretty wide limp&calling ranges.
Villain 2:He is a regular too,I haven't played a lot with him.But i have seen that if he raises PF he will usually go for 3 streets barrels,Plus he tilts easily.And he is tight in general.

Btw villain 1 has a tentency to donk when he has a flush draw,or trips.

1/2 NL (10 handed)
UTG Hero (200$)
MP1 Unknown (x$)
BTN v2(800$)
BB V1 (500$)

Hero is dealt KK
Hero raises to 10$,MP1 calls,BTN calls,BB calls.

Flop(41$) 642
V1 donks for 15$,Hero raises 50,MP1 folds,V2 makes it 120$.,V1 folds.Hero folds.

Thought proccess
A)I am thinking the pot is 226 ,and i have to call 70$ more.Getting 3.2-1.
B)What is he raising with?Does he have a pair,flush draw,a set???If he had TT-AA he would raise me PF,Flush draw ,is he so crazy to do it when there is a donk and a raise from me?Set seems reasonable.
C)So my options are Shoving,or folding cause calling seems to be bad,am i playing scared money should i shove???I have just put in a quarter of my stack??I don't know,i think folding is the best option here.

Villain 2 shows 2 mucks the other card.Villain 1 Had QJ i overheard it.

Any thoughts on that?

Never folding here for $200. I just get it in if I can. Your re-raise on the flop was way too small. Pre-flop seems a bit small, too, but that's table-dependent.

PF i usually raise 4x,on the flop how much you think i sould have made it instead of 50?80-90?

For some reason I thought there was more in there. I guess $50 isn't terrible, but I'd probably go $60 or $70 -- mainly because I don't plan to fold. You have to put V2 on exactly a set to fold, unless he calls pre with 3,5. If you have that good of a read of V2, and you made good points, that's great. I just don't think I'm good enough to fold KK here, but maybe it was the right play. I'm sure the math guys will come along and let us know.

Which one is the crazy guy?

I don't think it's an awful fold. I made a similar fold last night and got shown a weaker overpair though, only difference is we were 300bb deep, but I stand by it. Some villains tend to go ape**** when they flop an overpair on a low board though. You have to watch for that. But big flop raises with less than KK are generally pretty rare, so without a stronger read I don't think it's bad.

V2 is the crazy guy.

not folding.

Not folding. With over pairs less than kings and so many draw in Vs range, I'm not getting away from this ever.

Bet more on flop and have an easier 3b ship.

Not much to say. You have to har a was that he's willing to cold 4 bet a flush draw. Not sure if you did or not. If he's a reg you should have had that read already.

A couple of sizing mistakes made a big difference in this hand. 1. Preflop probably should have been larger assuming table would call. 3. Flop raise should have been in the $70 range making a 3b trivial.