Stanislaus Katczinsky (Kat)
Kat is the leader of the pack in almost every way. He is 40, mature, strong, and has a distinctive sixth sense in identifying trouble and food, which the other men admire greatly. Kat becomes Paul's closest friend and ally in the course of the story. He believes in duty. And despite not personally embracing the ideals that drew him to this war, he fights his heart out. Kat's big moments in the book come from resolving little conflicts, from finding and killing the wild goose, to, in the end, dying from a shrapnel wound in the head after a bullet has hit his shin. He died in Paul's arms as Paul hurries to get him to the triage area. You can read more about Kat's relationship with Paul in Paul's "Character Analysis."