You are in MP with 6-6.
The 2 Villains have over 100x BB Stacks, as do you

1 limper(unknown) in front of you
you call with 6-6
Button (aggressive) raises 4x BB

Limper calls, as do you

Flop: K-7-6 rainbow

limper checks to you.

1). Do you bet, or let the aggressive villain possibly make a c-bet?
2). How much are you betting if you do decide to bet?
3). How do you play the rest of the hand if your bet gets called/ raised?