Boston Brand or Deadman, began his life as a 'daredevil trapeze jockey' in the circus until his death lead to him becoming an agent of a higher power.
Boston's former human-like appearance had changed to a skeleton wearing rotted circus acrobat clothes. He was present at a superhuman nightclub where he witnessed Superman's message to the metahuman patrons to join his Justice League or be dealt with.
Boston also noticed the presence of Norman McCay and the Spectre. He encountered them a second time during a meeting between the Quintessence; in which he shortly spoke with McCay about the Spectre's origin. Boston even offered McCay to look him up again when he "got to the other side".