Papulatus--One of a Kind

No one ever said each category were the categories established by Nexon.

Maplestory bosses fall into four "unofficial" categories. Overtime, the players have found strategies to dealing with the various bosses of Maplestory and the strategies sometimes overlap eachother; which lead the players apply the same strategies for some bosses and thus, formed unofficial, unspoken categories for each boss.

or that everything MUST fall into the categories. Make up your own if you want.