Boss Spirits
Boss Spirits are special Spirits that have increased stats, cannot be tamed, and are often but not always located as the last Spirit in a dungeon or Temple.
Types of Boss Spirits
Wilderness Boss Spirits
These Spirits are found in the wilderness, randomly appearing like other Spirits the player encounters. They can be identified first by their level seen by the Spirit Lens which will be higher than other Spirits in the area. Then in battle, the Spirit will often appear bigger and have a skull covering their Heart.
Dungeon Guardians
Guardians are a special Boss Spirit that is only found in dungeons. They choose their element depending on the Island the dungeon is on (Fire type on Fire Islands, ...). They are sometimes fought with additional Spirits just like random encounters with spirits.
Temple Boss Spirits
Spring Temple
The Spring Temple's Boss is Wildwood. He is an Earth-Type Spirit.
Summer Temple
The Summer Temple's Boss is Tidan. He is an Water-Type Spirit.
Fall Temple
The Fall Temple's Boss is Snapdragon. He is an Poison-Type Spirit.
Winter Temple
The Winter Temple's Boss is Sparking. He is an Electric-Type Spirit.
Rift
The boss from the rift is Missingno.
Infinidungeon bosses
On floors ending by 5, you will found a dice-looking boss. It has a random element.
On floors ending by 0, you will found an archangel-looking boss. It has a random element.