Patroklos, the one Achaean who is by far the most philos to Achilles—and who is killed wearing the very armor of Achilles.
Nagy argues that Patroclus functions as Achilles’ ritual substitute precisely through his donning of Achilles’ armor, which transfers heroic identity and doom from one body to another.
, The Best of the Achaeans: Concepts of the Hero in Archaic Greek Poetry, 1979thesis