How passive in order to just call here? (not much content)

[JrJordan]

Haven't played too many hands with villain yet, but his stats are the reason I'm there. VPIP of 50ish, PFR of 4. Aggro numbers ranging between .5 and 1.0 over 600 hands.

Party Poker 10/20 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, MP calls, <font color="#666666">1 fold</font>, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, MP calls, Button calls, SB calls.

Flop: (8 SB) A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP calls, Button folds, SB calls.

Turn: (5.50 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP folds, SB calls.

River: (7.50 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">SB raises</font>, Hero...

This guy was so passive I couldn't picture him raising a river J here, but it makes sense too that the case A would raise somewhere earlier.

How passive does your villain need to be to just call this river? This is the closest it's ever been for me.