[Cacophony]

king marlone-drops lvl 20 blue armour pieces
zombie king- drops 20 and 35 blue armour pieces
Giant goblin king- drops 35 and 55 blue armour pieces
iyzel tower- iron golem drops lvl 45 blue armour pieces
torturer king- drops lvl 55 blue armour pieces
Giant orc Captain- drops lvl 55 and 75 blue armour pieces
Crystal castle- jewel golem drops lvl 65 blue armour pieces (blues from the chests)
Giant Harpy- drops lvl 75 blue armour pieces
Dragons tomb- Corny drops lvl 85 blue armour pieces (all sub bosses drop blues too)

*adds*
Tears Marsh, Caiman Giant - lv95 blues
Leviathan's Nest, uh..sub bosses and egg at the end - 95 and 100 blues
Secret Lab, bosses and chest - 105 Lab blues
Malephars Lair, Pirra, Euryale, Malephar - lv105 Male blues (and oranges)