ok back with a proper Boss idea.
Head Necromancer Tomlin.
10k hp = Full Health... nothing
7k hp = Summons Skeletons (fairly weak ones though, but still cause a fair amount of damage)
4k hp = Inflicts Anorexia onto every player on that map
1k hp = Summons Horde of Skeletons (a bunch of lowish levelled Skeletons that practically just get in your way.)
Possible drops: Tomlins Staff, NecroBlade, Enhanced Dark Shield.
Tomlins Staff: Powerful-ish, easily made by changing some Colors on the Fire staff.
NecroBlade: Powerful sword with a high Str Requirment. or what ever >.>
Enhanced Dark Shield: (or Dark Shield (e)) a stronger version of Dark shield... can even use the same Sprite xD (when i say stronged i mean a bit stronger then "Round Shield")
See keeps every class happy (Shield for Guards, NecroSword for Knights and Tomlins Staff for Mages... and who cares about peasants xD)
Anyway please take my idea into thought Kris =)