villain was basically unknown and had stats over around 22 hands: 13.6/3.5. To my surprise, so many ppl coldcalled my UTG 1 raise behind but this villain just reraised to $55, What the heck was going around here, folks?? AK all-in preflop used to kill my profit a lot , a little bit scary in this situation.

PokerStars No-Limit Hold'em, $2 BB (8 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($114.65)
UTG ($154.75)
Hero ($197)
MP1 ($164)
MP2 ($202.65)
CO ($175)
Button ($168.35)
SB ($182)

Preflop: Hero is UTG+1 with K, A.
1 fold, Hero raises to $7, MP1 calls $7, MP2 calls $7, CO calls $7, 1 fold, SB calls $6, BB raises to $55, Hero ?? WTF??