Description from original post (created 2016-05-13 08:06):
Above is the [Insert boss here]
Nixis, Hunger of Oryx
Primus Ta' aun (displayed)
Blighted Disciple
Cabal Commander
Baxx Hand of Oryx
Fallen Archon 
Vro'ourn, Fist of Oryx
KEKSIS!!! THE BETRAYED!!!!
These are special Taken Champions or Bosses that have different models from the rest of the champions or bosses that are Taken.