The fourth trailer for Pacific Rim showcases the humans that are trying to fend off the kaiju scourge, with the help of monstrous robots known as Jaegers. We see an early interaction with Raliegh Beckett (Charlie Hunnam) and Stacker Pentecost (Idris Elba), where we learn that Stacker believes in second chances. Plus, we have a clip that serves as a companion to a scene released over the weekend, where Dr. Newton Geizler (Charlie Day) tells Hannibal Chau (Ron Perlman) that he needs access to a kaiju brain. Hannibal is a black market kaiju organ dealer with a thriving business in this post-apocalyptic world, where, as it turns out, these monstrous organs have plenty of health benefits to us humans. Watch as Hannibal tries to pitch his wares to the public in director Guillermo del Toro's sci-fi action-thriller.

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