Those who survived the onslaught of The Burning Crusade share memories of reaching level 70 and testing their mettle against the many raid bosses in Karazhan, Gruul’s Lair, and Magtheridon’s Lair. Their reward for facing these dangerous foes? A collection of finely crafted armor some call “Tier 4” raid gear — the first set from World of Warcraft’s first expansion.

Whether you’re collecting this iconic tier set for the first time or reminiscing about your time spent obtaining it nine years ago, the five bosses that guarded these tokens are certain to have left an impression. Which boss do you recall most (or not so) fondly?