Who is Crab from Brighton Rock and what is their importance? Brighton_Rock_(novel) English & Literature Crab | Brighton Rock

Crab is a Brighton thug who has allied himself with Colleoni since Kite's killing. Early in the novel, he informs the nervous Spicer that Colleoni has arranged Pinkie's arrest. Later, he gleefully informs Cubitt that Colleoni will not take him on.