Hero CR to 600 on the flop. Most likely Villian A holds a weak A or mid-pair and will have to lay it down, unlikely Villian B intends to come as he had his chance to raise and didn't. Unnamed villians could have been looking for a CR as well but is unlikely. The board doesn't look draw heavy so your CR will feel like a flopped 2 pair or a set. You're in a very good position to add 25% to your stack w/o a showdown - take it.