Remember the spire on nessus? Yeah me neither. If you allow ghost to scan the spire, he mentions atheon, sekrion and whatchamacallit. The harpy guy. Remember in d1? Our beloved raid boss? Well in the original game, sekrion was a hydra brought back by the vex in a strike. In ttk, Mr "whatchamacallit" is a harpy on Venus that you also fight in a strike. Can't remember -blam!-