V ($225): Middle-aged, fishy guy, has been minraising every hand, plays a lot of junk.

Hero ($300+): Probably viewed as tight by V.

V raises to $6 in MP, Hero calls KQo in LP, BB r/r to $12 (lol), V calls, Hero calls

Flop ($36): KQ9r
V checks, Hero bets $20, BB folds, V c/r to $50, Hero ???

I'm sure V is never bluffing here, also, he raises bigger with KK/QQ/99 pre, but JT makes sense here, but also does KQ/K9/Q9. What are Hero's options?

if he's min raising every hand, I think KQ is value 3bet here.
lol at BB, but I see this at least 10 times in a night.
Tough spot. He could value his K9/Q9 here same way as JT/KK/QQ/99.
Hard to let go OTF, but if I peel turn, I am folding to a lot of bets then.

I wouldn't 3 bet here.

Folding requires a super read but not unheard of. If you think his range here is Q9/K9/JT/KQ

Board: Kc Qh 9d
Dead:

equity win tie pots won pots tied
Hand 0: 48.897% 42.11% 06.78% 13342 2148.50 { KsQs }
Hand 1: 51.103% 44.32% 06.78% 14041 2148.50 { KQs, K9s, Q9s, JTs, KQo, K9o, Q9o, JTo }

On a blank turn, it'd be like:

Board: Kc Qh 9d 3s
Dead:

equity win tie pots won pots tied
Hand 0: 46.591% 40.34% 06.25% 568 88.00 { KsQs }
Hand 1: 53.409% 47.16% 06.25% 664 88.00 { KQs, K9s, Q9s, JTs, KQo, K9o, Q9o, JTo }

So yeah, I'd call down.

If we're deeper (100 BB or more), are we still calling down?

Math says yes. Hard to answer a question with a number of variables. Usually the board doesn't run out perfect where villain puts us in an awkward spot.

We should include 99 in our ranging imo.
Past that, follow the math.

Probably calling down to the river.