Top 5 Mini-bosses:
1: Dark Link (Water Temple, OoT)
2: Darknut (Temple of Time, Hyrule Castle and Cave of Ordeals, TP)
3: Iron Knuckle (Spirit Temple and Ganon's Castle, OoT)
4: Dead Hand (Bottom of the Well and Shadow Temple OoT)
5: LD-002G Scervo/LD-003K Dreadfuse (Sandship/Sky Keep, SS)