Who are bosses in Kingdom Hearts 2

Seifer, Dusk, Giant Nobody, Axel, Axel (again), Shan Yu, Thresholder, Beast, Shadow Stalker, Hades, Cerberus, Demyx, Pete x2, Hydra, Protect the Queen Past Pete, Pete, Barbossa, Blizzard Lord & Volcanic Lord, Prison Keeper, Oogie Boogie, Hyenas, Scar, Hostile Program, Demyx, Mysterious Man, Storm Rider, Xaldin, Grim Reaperx2, Hades, Jafar, Test Subject, Hyenas, Groundshaker, Sark, MCP, Sephiroth, Xigbar, Luxord, Saix, Xemnas x2