Villain is super aggressive young asian who has a maniac image. He loves pushing people around especially pounding short stacks and making some big bluffs then show them to the table. But he knows what he's doing as he gets so much value when he has a hand. And he is definitely aware of position as he's noticeably much tighter in EP and raises almost every single hand in LP.
He sees me as a nitty/TAG player and he's pretty cautious when playing against me. When he's in the pot with me just heads up or 3 handed he usually gives up when I show strength.
Pre-flop:
EP(weak passive ~$200) limps
Villain(~$900) in MP raises to $15
Hero(~$400) in BTN calls with 4
4
BB(calling station nervous young guy, stack~$45) calls
EP limper calls
Flop($60): 4
5
9
BB goes all in for $30
EP folds
Villain calls
And I call
Villain immediately goes "WTF I didn't know he's in the hand too" (I'm in seat 1 and he's in seat 8 so it's pretty hard for us to see either other because the dealer is in between.)
Turn($150): J
Villain stares at me(and make sure I know it) and checks
My thought process "I'm probably way ahead. The short stack was all in so there's no side pot yet. If I show too much strength the Villain will likely fold. But checking would be stupid because I want to build up the pot"
So I bet a small amount $55
Villain thinks a bit and calls
River($260): 7
Villain checks again
And I bet small again $120
thoughts on all streets?