I'm sorry, the correct action is:
Grabbed by
Holdem Manager
NL Holdem $0.50(BB) Replayer
Hero ($50)
($103)
Dealt to Hero J

J
raises to $1.50, Hero raises to $5, calls $3.50
FLOP ($10) Q

6

4
Hero bets $5.50, raises to $18.50, Hero ?
@deamon: Well, he has really only shown the goods in one exact hand. The A9o hand rather indicates that he's buttonclicky and doesn't have too much of an idea what's going on. And I don't think we can necessarily compare his turn raising range in unraised pots with a flop raise in a 3b pot.
That said, I find that especially the more fishy guys with such a bad image almost always have a hand in this spot when they've been raising a couple of times before. I feel like it's so much more likely for him to show up with a random Qx than a bluff.
@d2themfi: Both infos are in my initial post. His BTN/SB VPIP was 67//65 so his BTN steal was 67 and his F3bet is 0 over 1 sample (the K3s hand)
I just think this spot is pure crap. Shoving doesn't seem to make any sense because I'm either crushed or not that far ahead and I don't know much about his raising ranges. Especially with our history and his image, I don't think I'll catch him bluffing here all that often.
Calling doesn't look like a very attractive option either. With his terrible raise size I'm committed anyway but even if he raised smaller, I don't think it changes things that much. I'm either crushed and will terribly get it in on the turn (calling a flop raise and folding the turn seems even worse) or he's giving up on a bluff, realizing his outs and potentially he could even bluff me on good river cards. Again I don't think I'll catch him bluffing the turn very often.
So the last option is folding which seems nitty given how often he has been raising and how strong my hand is in this scenario but it really seems like the best option unless I have more info. The ball is clearly in his court, he can put me to the test and I have to reveal the bottom of my range which is another metagame advantage for him.