Villain is 50/24/3.4 over 70ish hands. There are so many that play like this at my site. Note on him says he's called down all streets with middle pair and once with a draw he then bluffed with on the river. I doubt he'll fold to a c-bet, but almost 100% he'll bet if I check. What do I do in this spot as played? Check folding this is where a lot of my losses are about, happens so much. And should I not be 3-betting him knowing he calls just about anything?

Absolute/UB Cereus No-Limit Hold'em, $0.10 BB (5 handed) - Absolute/UB Cereus Converter Tool from FlopTurnRiver.com

Button ($3.83)
Hero (SB) ($11.33)
BB ($7.52)
UTG ($11.84)
MP ($4.40)

Preflop: Hero is SB with A, K
UTG bets $0.35, 2 folds, Hero raises to $1.30, 1 fold, UTG raises to $4, Hero calls $2.70

Flop: ($8.10) 7, 6, 2 (2 players)
Hero ???

Total pot: $8.10 | Rake: $0.40