Kind of a tricky spot here with a 4-way limped pot and a crappy hand. I'm fairly certain I made a mistake (or multiple) here on earlier streets so feel free to chime in there, but I'll hold my comments to myself until I've gotten some opinions from others.

Not much in terms of a perception of villian, but seems kind of fishy and is playing quite a few pots with not much in terms of showdown at this point.

NL Holdem $10+$1 (10000BB)
HERO ($664003) [VPIP: 15% | PFR: 12.3% | AGG: 12.2% | Flop Agg: 16.3% | Turn Agg: 11.6% | River Agg: 6.1% | 3-Bet: 5% | 4-Bet: 20% | Hands: 3544]
UTG ($278697) [VPIP: 48.3% | PFR: 20.7% | AGG: 23.1% | Flop Agg: 36.4% | Turn Agg: 12.5% | River Agg: 14.3% | 3-Bet: 11.1% | 4-Bet: 0% | Hands: 29]
EP ($119477) [VPIP: 10.3% | PFR: 7.7% | AGG: 0% | Hands: 41]
MP ($269638) [VPIP: 28.6% | PFR: 14.3% | AGG: 25% | Hands: 21]
HJ ($157556) [VPIP: 3.3% | PFR: 0% | AGG: 0% | Hands: 30]
CO ($230358) [VPIP: 11.5% | PFR: 0% | AGG: 0% | Flop Agg: 0% | Turn Agg: 0% | River Agg: 0% | 3-Bet: 0% | 4-Bet: 0% | Hands: 96]
BTN ($186702) [VPIP: 13.8% | PFR: 1.3% | AGG: 9.5% | Flop Agg: 9.1% | Turn Agg: 0% | River Agg: 25% | 3-Bet: 0% | 4-Bet: 0% | Hands: 80]
SB ($197253) [VPIP: 35.8% | PFR: 23.2% | AGG: 46.7% | Flop Agg: 60% | Turn Agg: 30.8% | River Agg: 28.6% | 3-Bet: 14.3% | 4-Bet: 0% | Hands: 96]

Dealt to Hero: 4 6

UTG Calls $10000, EP Folds, MP Folds, HJ Folds, CO Calls $10000, BTN Calls $10000, SB Calls $5000, HERO Checks

Hero SPR on Flop: [3.03 effective]
Flop ($58000): 5 5 6
SB Checks, HERO Checks, UTG Bets $58000 (Rem. Stack: $209697), CO Folds, BTN Folds, SB Folds, HERO Calls $58000 (Rem. Stack: $595003)

Turn ($174000): 5 5 6 2
HERO Checks, UTG Checks

River ($174000): 5 5 6 2 8
HERO Checks, UTG Bets $209697 (allin), HERO ? (Rem. Stack: $385306)

I think I just fold flop.. as played fold river

Not that this analysis is very deep but: your call on the flop seems reasonable, same with the check on the turn. Given this player's fishy appearance, his river jam seems pretty balanced between bluffs and value bets so you should call sometimes and fold sometimes.

I would fold preflop and fold to the psb OTF, but I can't say either is absolutely right.

Fold pre is very wrong and seems like a pretty easy fold on the flop when UTG limps then bets into 4 players they always have a big pair . We are drawing to 2 outs

Oh, I misread it. I thought it was an UTG raise.

UTG didn't just bet, he potted it into 4 players.

I think I’m folding the flop for a bet this size, especially into multiple players. Is he doing this with 33 or 22?

Even if you’re ahead here of some kind of draw, you’re going to be OOP and just about every card that could come on the turn and river is going to be bad.

No need to get involved here.