Avengers #8 Issue: Avengers #8 Year: 1998 Significance: First appearance of Triathlon. Later he would become the 2nd 3-D man Buy on Ebay! View Recent Ebay! sold prices Previous Next Related Flash Rebirth #8 2016 Black Keys, Modern Age DC: The New Frontier #3 Black Keys, Copper Age Free Comic Book Day 2022: Avengers / X-Men: Judgment Day #1 Black Keys, Modern Age