Villain in the hand i have never played hu. I have played him in 6max however. I'd classify him as semi loose pre, very aggressive postflop. I've seen him triple barrel air on two seperate occassions one where the board just came out dry blanks and one where flop was low and an overcard came on the turn, river draws missed. I'd assume he's calling this 3bet pre pretty wide. Its safe to assume he'll bluff raise flops but not sure about this one.

Curious what you guys do here.

PokerStars No-Limit Hold'em, $50.00 BB (2 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Hero (BB) ($5050)
SB ($5000)

Preflop: Hero is BB with K, A
SB bets $150, Hero raises to $500, SB calls $350

Flop: ($1000) J, K, 9 (2 players)
Hero bets $650, SB raises to $1950