Bosses

Bosses are mobs that only spawn one at a time, almost always in only one location. They can be involved in Quests, Dungeons, Secret Discoveries and Boss Altars. Most bosses from Quests are not very difficult to kill (with certain exceptions). They have a lot of health, but aren't always particularly challenging. Bosses found at the end of Dungeons are often very challenging, and always involve a unique gimmick that keeps them from simply being damage sponges. Bosses from Boss Altars are designed for multiple players, and are therefore extremely difficult to take on alone. These bosses also generally include a gimmick of some sort. This page will include a list of the bosses currently ingame, and information on them will be put on their own given page. Information on the bosses from Boss Altars is documented on the page of their respective Boss Altar. Legendary Island Bosses that you fight during the  Legendary Island challenge are also documented on their own page.

List of Boss Mobs
Here is a table showing the quest that they come from, and the mob page, with a link to their page.

Miscellaneous Bosses
These are unique, powerful boss mobs that do not have any connections to quests, dungeons or other content. This group also does not include mobs technically classified as Rare Mobs. They are often found in difficult-to-reach locations, and are usually fought to obtain rare item drops that cannot be obtained elsewhere.

Trivia

 * Bosses are hard for people at the level of their respective dungeon or quest, but may be easier at higher levels.
 * Bosses tend to have a lot of health, making them take longer to kill than normal mobs.