Lots of early action, what could they be on?

There are definitely some fish at this table...haven't seen too much out of mboyd, but citizendick and deride have both proven they are willing to go to the felt with overpairs or tptk, or with jst pure crap. Is there any way I can put them on the flopped strt here given that image? What's your play? If dick is drawing, am I correct to stay in with him and pump it up a bit to force out those behind me?

Seat 1: crime002000 ($710.45 in chips)
Seat 2: Wildman1999 ($559.10 in chips)
Seat 3: deride ($77.80 in chips)
Seat 4: mboyd4 ($656.25 in chips)
Seat 5: happymann ($1099.30 in chips)
Seat 6: Citizendick ($220.95 in chips)
Seat 7: x_Pack_x ($508.80 in chips)
Seat 8: Maria Anna ($130.05 in chips)
Seat 9: $ureBet ($546 in chips)
Wildman1999: posts small blind $3
deride: posts big blind $6
*** HOLE CARDS ***
Dealt to crime002000 [6d 6h]
mboyd4: raises $12 to $18
happymann: calls $18
Citizendick: calls $18
x_Pack_x: folds
Maria Anna: folds
$ureBet: folds
crime002000: calls $18
Wildman1999: calls $15
deride: calls $12
*** FLOP *** [6c 4d 5c]
Wildman1999: checks
deride: checks
mboyd4: bets $102
happymann: folds
Citizendick: raises $100.95 to $202.95 and is all-in

Mboyd most certainly has an over-pair....as for citizen...draw of some sort probably. I would flat call, and hope Mboyd stays in. Deride doesn't worry me too much...doesn't matter if you raise or not, since Deride will be all in either way if he calls. If Mboyd stays in, you can bet the turn and river and he is working on 2 outs. There is the possibility that Mboyd has AKc...then he has 9 outs, although he might stay either way with this hand.

Wow J3?

I still think a flat call isn't a bad thing here....Your raise is irrelevant to deride....this only affects Mboyd. So you can raise and get Mboyd out...or call and try and keep Mboyd in. So the question now becomes, do you want Mboyd in or not. What are his likely holdings....PP and flush draw. I think PP is more likely because of his bet on the flop...therefore I want to try and keep him in to take more money off him on later streets...2vs3vs4 way is irrelevant here - do you think you are way ahead of Mboyd...I think so, I try and keep him in drawing to 2 outs. Flat call and bet the turn.

You easily made the right play. With three way action, I'd make that call on the flop even if I knew they had BOTH flopped the straight, because the effective odds of you filling up are about even with your pot odds.