Random Bosses is a mod that randomly generates Bosses around the world with valuable and useful loot!

Bosses have 4 levels, the fourth of which is special and called “Champion”

Monster Bosses generate: Hostile mobs can generate as Bosses (default: true)
All entities can generate as a Boss (default: false)
Bosses glow: All Bosses have glowing effect with a color corresponding their level (default: true)
Bosses can be upgraded: Allows a Boss to level up by killing a Boss of equal or higher level (default: true)
Non-Bosses can become Bosses: Upon killing a Boss, any entity can become a Boss with same level as the one it killed (recommended with the gamerule “Bosses can be upgraded”) (default: false)
Number of entities needed for a boss to spawn: (there is a gamerule for each level) Number of mobs needed to spawn for a single boss to spawn (0 to disable spawning)
Bosses have a name tag (there is a gamerule for each level) (default: true for all levels)
Bosses despawn (there is a gamerule for each level) (default: true for level 1, 2 and 3 bosses and false for level 4, in the last version)
Progressive size of bosses (requires Pehkui) (default: true)
Random boxes only for player kills: Sets if any non-player entity can drop a Random Box by killing a Boss as long as the entity cannot become a Boss (default: true)