.5 pfr over 40000 hands and when he shows down he a win at showdown of 80 percent With such a low pfr that means he isn't even raising aces every time. To try and be more concise his stats look like this.
Hands on villain 40000
pfr .5
cpfr=17
W$sd=80
aggr=3.
fold to c-bet=70
c-bet=20
As far as how i play such a villain. I'm c-betting him 100 percent of the time. If he calls i'm giving up with everything except big over pairs like JJ+. I know that seems uber nitty but this dude will have a big hand when he calls a c-bet. In short i'm gonna c-bet him every time. If i face him hu in a limped pot. That would only ever happen if i'm the BB i'm gonna bet into him almost every time. I'm treating his flop calls like they are flop raises. If he raises me on any street i'm putting him on 2p+. I actually have several of these types in my db. I think the biggest thing is you really need to tighten your double and triple value betting range.