[converted_hand][hand_history]Full Tilt, $20 Buy-in (25/50 blinds) No Limit Hold'em Tournament, 2 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite. View Hand #8173142

SB: 1,165 (23.3 bb)
Hero (BB): 1,835 (36.7 bb)

Preflop: Hero is BB with 4 A
SB completes, Hero checks

Flop: (100) 3 A K (2 players)
Hero checks, SB bets 50, Hero calls 50

Turn: (200) T (2 players)
Hero checks, SB bets 200, Hero calls 200

River: (600) 5 (2 players)
Hero?

Some info on villain:
6,225 $0 $21 2% -$295
Limp K7s chk 37Ar call lead 5 turn check 3 river w/ 2nd pair @ 20
Slowplay/flat QQ checkraise 60 > 120 cbet > 300 call shove on JT7r @ 30
3b shove KJo 25bb @ 50
3xd limp w/ A5o check down on Q9Kss 3ssss T @ 30
3x 7To cbet 1/2 pot J92ss barrel turn Ts check A river @ 30

He sat me in the first game which I won and now sat me a few hrs later. 100+ hands in he raises 50% of his btns, limps some weak Kx and likes to slowplay so I think QQ/KK/AA sometimes, the limped pots so far he made he also stabbed about 90%, do I underep my hand here enough to c/call and have him bluff river? Do you call a overbet jam 800~ > 600?

I would c/r flop and see what happens.
And river probably check and revalute to his bet size if such takes place. If quite huge I'd take folding into consideration. Also look at that he took similar line with gut shot before, besides preflop play. And seems like he likes limping and slowplaying better hands also. Here he doesn't.. Very strange. His preflop play doesn't fit his postflop. We could get some value from random kings if we bet.

Pretty strange line... Usually means for me pretty strong afraid of different draws but with these crazy reads who knows. Is he aggressive postflop?

He cbets 7/10 in raised pots and barrels 1/2 the time on the turn. I think theres more value in letting him barrel a wider range that we can value bet on the river, if we c/r he will call/jam stronger some of the time and folds on one street bc the board is super dry, also if he flats the c/r we can get into tons of trouble and are obligated to jam turn ourselves almost everytime.

How did he like to value bet. Some people never pot 2p OTT in which case he's FoS so snap. Some people go huge for value and never bluff, in which case fold. You should have reads to at least give you a lean on where he is here and then ur play is pretty obv.

Fwiw I'm calling here most of the time because he's repping a narrow range

His sizes ranged from 2/3 to pot post, he missed value often checking back TP sometimes or overpairs if he was trying to slowplay although he remained aggro, c/r flop 33%, cbet 70% of the time and barrelled turn 50%. He is capable of turning non showdownable hands into bluffs like missed draws/undercards on questionable boards etc

Well he seems afro and he's repping a narrow range so id call. But most afro players aren't balanced and you can pick up difference in how they play when going for value and how they bluff, especially in timing and sizing

Afro is agro, stupid phone

excellent post but do not value bet river as we fold out air/ missed draws. due to his slowplaying ness, id see his psb as air/ weakness, and i would c/c 3 sts. also note worthy that he will raise a limp with Ax so i am sure part of his mind expects you to do the same, therefore discounting the likelihood you have an ace, which increases the likelihood that he is bluffing

thanks for the help guys I actually c/c an overbet (hence me asking it in the OP) I think I explained my reasoning and its def close, is there actually much difference if he overbet jams rather than like 1/2 2/3, if he bets half pot he will have like 400 behind, I assume a semi thinking player wants to maximise his fold equity when he misses right?

If he overbets river, this is definetly close. But he isn't repping much. Just seems like one of those spots where you would be inclined to call, but make your final decision based on timing/reads/history etc.