Winning Poker Network (Yatahay) - $4 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

SB: 100 BB (VPIP: 20.59, PFR: 13.97, 3Bet Preflop: 10.14, Hands: 138)
BB: 50 BB (VPIP: 4.55, PFR: 4.55, 3Bet Preflop: 9.09, Hands: 22)
UTG: 93.78 BB (VPIP: 38.10, PFR: 23.81, 3Bet Preflop: 14.29, Hands: 21)
Hero (MP): 193.24 BB
CO: 56.56 BB (VPIP: 28.89, PFR: 23.33, 3Bet Preflop: 15.79, Hands: 93)
BTN: 107.43 BB (VPIP: 22.92, PFR: 18.75, 3Bet Preflop: 20.83, Hands: 49)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has Q K

fold, Hero raises to 2.5 BB, fold, BTN raises to 10 BB, fold, fold, Hero calls 7.5 BB

Flop: (21.5 BB, 2 players) 4 2 Q
Hero checks, BTN bets 7 BB, Hero calls 7 BB

Turn: (35.5 BB, 2 players) 2
Hero checks, BTN bets 22 BB, Hero calls 22 B1B

River: (79.5 BB, 2 players) 6
Hero checks, BTN bets 68.43 BB and is all-in, Hero calls 68.43 BB

I know this seems like an iffy call pre, but Villain had been super aggro at this table up until this point. He'd 3bet 3/6 hands on the button leading up to this point, and he 3bet/5bet jammed 100 BBs from the SB against my BTN open with 88. So it's safe to say his 3bet range pre has a decent amount of air in it. Still though, maybe should've folded against the super large 3bet.

I also saw him slowplay a hand, checking back TPTK in position on a dry flop, so have reason to believe his ranges arent' always super balanced.

Knowing that, do we feel good about a x/call down here against this aggro player?

If you've called 3b pre with KQo and are sure you are ahead of his range then you are always stacking Qx or Kx boards.

I see air, worse Qx hands here on the river a lot by your read and history. You played it well allowing him to fire air and worse hands.