Boss Pokémon

Boss Pokemon are rare, uncapturable wild Pokemon. Their boss tier controls their battle level, model size, name and shader color, Mega form, palette, and additional rewards. Throwing a Poke Ball at a boss does not begin a capture attempt.

Natural spawning

Each standard wild spawn has a 1 in 256 (0.391%) chance to become a boss. In Ultra Space, the chance is 1 in 128 (0.781%). Eligible naturally selected bosses Mega Evolve whenever possible. Non-legendary species with a Mega form use the Mega-only tier weights, while legendary bosses use the Ultimate tier.

Separate Mega boss spawner

Mega boss spawn attempts occur on an average base interval of 10,000 ticks (8 minutes 20 seconds). Each attempt has a 30.00% chance to proceed, and a valid species and spawn location must still be available.

Mega boss spawn pool

The following species can be selected by the separate Mega boss spawner. Spawn weight is compared only with other entries valid at the selected location.

Species	Location	Spawn weight	Biome requirement
Abomasnow	Land	0.3	Freezing Forests Freezing Mountains
Absol	Land	0.3	Mountainous End Barrens
Aerodactyl	Air	0.3	Mountainous
Aggron	Land	0.3	Mesas
Alakazam	Land	0.3	End Highlands Forests
Altaria	Air	0.3	Birches Magical Volcanic
Ampharos	Land	0.3	Plains Snowy Plains
Audino	Land	0.3	Birches
Banette	Land	0.2	Plains Evil
Beedrill	Land	0.3	All Forests Flowery Crag Gardens
Blastoise	Land	0.2	Beach Dune Beach Rainbow Beach
Blaziken	Land	0.2	Savannas
Camerupt	Land	0.3	Arid Badlands Volcanic
Chandelure	Land	0.2	Roofed
Charizard	Air	0.2	Mountainous Eroded Badlands Volcanic
Darkrai	Land	0.1	Roofed
Diancie	Underground	0.1	Mountainous
Dragonite	Air	0.3	Deep Ocean Deep Warm Ocean Deep Lukewarm Ocean
Gallade	Land	0.3	Birches
Garchomp	Land	0.3	Arid
Gardevoir	Land	0.3	Birches
Gengar	Land	0.2	Taigas Roofed Evil
Glalie	Land	0.3	Freezing
Groudon	Land	0.1	Arid
Gyarados	Water	0.3	Oceanic Lakes
Heracross	Land	0.3	Taigas Redwoods
Houndoom	Land	0.3	Mesas Arid Volcanic
Kangaskhan	Land	0.3	Savannas
Kyogre	Water	0.1	Oceanic
Latias	Air	0.1	Oceanic
Latios	Air	0.1	Oceanic
Lopunny	Land	0.3	Freezing Forests
Lucario	Land	0.3	Mountainous Forests
Manectric	Land	0.3	Plains Savannas
Mawile	Land	0.3	Mountainous Freezing Mountains
Medicham	Land	0.3	Mountainous Forests Freezing Mountains
Metagross	Land	0.3	Mesas Ice Spikes End Highlands End Barrens
Mewtwo	Air	0.1	Jungles
Pidgeot	Air	0.3	Forests Plains Taigas
Pinsir	Land	0.3	Jungles
Raichu	Land	0.3	All Forests
Rayquaza	Air	0.1	Mountainous
Sableye	Underground	0.3	Any
Salamence	Air	0.3	Mesas
Sceptile	Land	0.2	Jungles
Scizor	Land	0.3	Jungles Savannas
Sharpedo	Water	0.3	Oceanic
Slowbro	Land	0.3	Beaches Lakes Rivers
Starmie	Seafloor	0.3	Oceanic
Steelix	Land	0.3	Mountainous Mesas
Swampert	Land	0.2	Swamps
Tyranitar	Land	0.3	Mountainous Mesas
Venusaur	Land	0.2	Birches Forests Crag Gardens

Boss tiers

Randomly selectable tiers

Randomly selectable tiers are chosen by relative weight. The all-tier chance uses every randomly selectable tier; the Mega-only chance uses only tiers that Mega Evolve eligible species.

Tier	Color	Weight	All-tier chance	Mega-only chance	Level multiplier	Added levels	Battle level	Model scale	Mega	Forced palette
Common	#C0C0C0	50	33.11%	-	1x	5	Highest opposing level + 5	1.2x	No	None
Uncommon	#00D43F	40	26.49%	-	1x	10	Highest opposing level + 10	1.4x	No	None
Rare	#006EFF	30	19.87%	-	1x	20	Highest opposing level + 20	1.6x	No	None
Epic	#9F00D9	20	13.25%	64.52%	1x	30	Highest opposing level + 30	1.8x	Yes	None
Legendary	#FFA200	10	6.62%	32.26%	1x	40	Highest opposing level + 40	2x	Yes	Shiny
Ultimate	#00FFFF	1	0.66%	3.23%	1x	50	Highest opposing level + 50	2.2x	Yes	Shiny

Special tiers

These tiers are excluded from weighted random tier selection and are only applied by specific encounters or commands (such as the boss command). They are still true bosses — uncapturable, with the boss name colour and rewards — with two exceptions: Equal is a boss that battles at the player's level with no level, size, or Mega bonus, and Not Boss is simply the marker for an ordinary, non-boss Pokemon.

Tier	Color	Level multiplier	Added levels	Battle level	Model scale	Mega	Forced palette	Is boss	ID
Drowned	#67C9A4	1x	20	Highest opposing level + 20	3x	No	Drowned	Yes	drowned
Equal	#FFFFFF	1x	0	Highest opposing level	1x	No	None	Yes	equal
Haunted	#C281C7	1.25x	3	floor(Highest opposing level x 1.25) + 3	1x	No	None	Yes	haunted
Not Boss	#FFFFFF	1x	0	Highest opposing level	1x	No	None	No	notboss

Level scaling

When battle starts, the highest level used by any opposing player is multiplied by the tier's level multiplier. The fractional part is discarded, then the tier's added levels are applied. The boss also battles with maximum IVs and a randomized maximum EV spread.

Mega forms and palettes

A Mega tier changes an eligible Pokemon into one of its Mega forms. Species with a primal form use that form instead. A tier with a forced palette applies that palette; otherwise the normal palette is used.

Mega item rewards

When an eligible Mega boss is defeated, one Mega item associated with its form is selected for the player receiving rewards. The first-item chance applies until that species and form has awarded its Mega item to the player; later defeats use the repeat chance.

Tier	First Mega item	Repeat Mega item
Epic	100.00%	2.50%
Legendary	100.00%	5.00%
Ultimate	100.00%	10.00%

Drops

Defeating a boss always gives that species' normal wild drops, plus bonus rewards based on its boss tier. A tier's bonus rewards are grouped into one or more reward sets, and every set is rolled separately each time the boss is defeated:

• Activation — each set first rolls its own chance to activate. Some sets always activate; others only sometimes.
• Selection — when a set activates it picks one (or more) rewards at random. An item's weight is how likely it is to be picked compared with the other items in the same set, so a higher weight drops more often.

Mega item rewards are rolled separately (see Mega item rewards above).

CommonUncommonRareEpicLegendaryUltimateEqualHauntedDrowned

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Xs Exp Candy	10	43.48%
S Exp Candy	7	30.43%
Dynamax Candy	5	21.74%
Rare Candy	1	4.35%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
X Attack	1	5.00%
X Defense	1	5.00%
X Special Attack	1	5.00%
X Special Defense	1	5.00%
X Speed	1	5.00%
X Accuracy	1	5.00%
Guard Spec	1	5.00%
Film	1	5.00%
Air Balloon	1	5.00%
Light Clay	1	5.00%
Mental Herb	1	5.00%
Power Herb	1	5.00%
White Herb	1	5.00%
Sticky Barb	1	5.00%
Weakness Policy	1	5.00%
Blunder Policy	1	5.00%
Repel	1	5.00%
Tm8 Blank	1	5.00%
Tr8 Blank	1	5.00%
Adrenaline Orb	1	5.00%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Old Rod	1	4.17%
Leftovers	1	4.17%
Fire Stone	1	4.17%
Water Stone	1	4.17%
Leaf Stone	1	4.17%
Thunder Stone	1	4.17%

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
S Exp Candy	10	38.46%
M Exp Candy	7	26.92%
Dynamax Candy	7	26.92%
Rare Candy	2	7.69%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Safety Goggles	1	4.55%
Toxic Orb	1	4.55%
Flame Orb	1	4.55%
Life Orb	1	4.55%
Eviolite	1	4.55%
Heavy Duty Boots	1	4.55%
Protective Pads	1	4.55%
Throat Spray	1	4.55%
Room Service	1	4.55%
Red Card	1	4.55%
Rocky Helmet	1	4.55%
Assault Vest	1	4.55%
Loaded Dice	1	4.55%
Punching Glove	1	4.55%
Wide Lens	1	4.55%
Scope Lens	1	4.55%
Zoom Lens	1	4.55%
Super Repel	1	4.55%
Tm8 Blank	1	4.55%
Tr8 Blank	1	4.55%
Adrenaline Orb	1	4.55%
Covert Cloak	1	4.55%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Old Rod	1	2.08%
Up Grade	1	2.08%
Fire Stone	1	2.08%
Water Stone	1	2.08%
Leaf Stone	1	2.08%
Thunder Stone	1	2.08%
Moon Stone	1	2.08%
Sun Stone	1	2.08%
Dawn Stone	1	2.08%
Dusk Stone	1	2.08%
Shiny Stone	1	2.08%
Ice Stone	1	2.08%

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
M Exp Candy	10	37.04%
L Exp Candy	7	25.93%
Dynamax Candy	7	25.93%
Rare Candy	3	11.11%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Pp Up	1	4.17%
Pp Max	1	4.17%
Calcium	1	4.17%
Carbos	1	4.17%
Hp Up	1	4.17%
Iron	1	4.17%
Protein	1	4.17%
Zinc	1	4.17%
Choice Band	1	4.17%
Choice Scarf	1	4.17%
Choice Specs	1	4.17%
Ever Stone	1	4.17%
Destiny Knot	1	4.17%
Focus Sash	1	4.17%
Focus Band	1	4.17%
Macho Brace	1	4.17%
Power Anklet	1	4.17%
Power Band	1	4.17%
Power Belt	1	4.17%
Power Lens	1	4.17%
Power Weight	1	4.17%
Power Bracer	1	4.17%
Tr8 Blank	1	4.17%
Adrenaline Orb	1	4.17%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Good Rod	1	2.50%
Lucky Egg	1	2.50%
Dubious Disc	1	2.50%
Linking Cord	1	2.50%
Gracidea	1	2.50%
Reveal Glass	1	2.50%
Dna Splicers	1	2.50%
Scroll Of Darkness	1	2.50%
Scroll Of Waters	1	2.50%
Exp Share	1	2.50%

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
M Exp Candy	10	30.30%
L Exp Candy	7	21.21%
Xl Exp Candy	5	15.15%
Dynamax Candy	7	21.21%
Rare Candy	4	12.12%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Buginium Z	1	5.56%
Darkinium Z	1	5.56%
Dragonium Z	1	5.56%
Electrium Z	1	5.56%
Fairium Z	1	5.56%
Fightinium Z	1	5.56%
Firium Z	1	5.56%
Flyinium Z	1	5.56%
Ghostium Z	1	5.56%
Grassium Z	1	5.56%
Groundium Z	1	5.56%
Icium Z	1	5.56%
Normalium Z	1	5.56%
Poisonium Z	1	5.56%
Psychium Z	1	5.56%
Rockium Z	1	5.56%
Steelium Z	1	5.56%
Waterium Z	1	5.56%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Good Rod	1	4.17%
Lucky Egg	1	4.17%
Silver Bottle Cap	1	4.17%
Amulet Coin	1	4.17%
Rare Candy	1	4.17%
Exp Share	1	4.17%

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
L Exp Candy	10	34.48%
Xl Exp Candy	7	24.14%
Dynamax Candy	7	24.14%
Rare Candy	5	17.24%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Draco Plate	1	5.56%
Dread Plate	1	5.56%
Earth Plate	1	5.56%
Fist Plate	1	5.56%
Flame Plate	1	5.56%
Icicle Plate	1	5.56%
Insect Plate	1	5.56%
Iron Plate	1	5.56%
Meadow Plate	1	5.56%
Mind Plate	1	5.56%
Pixie Plate	1	5.56%
Sky Plate	1	5.56%
Splash Plate	1	5.56%
Spooky Plate	1	5.56%
Stone Plate	1	5.56%
Toxic Plate	1	5.56%
Zap Plate	1	5.56%
Blank Plate	1	5.56%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Super Rod	1	4.17%
Nether Star	1	4.17%
Silver Bottle Cap	1	4.17%
Copper Hourglass	1	4.17%
Lens Silver	1	4.17%
Exp Share	1	4.17%

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Xl Exp Candy	7	35.00%
Dynamax Candy	7	35.00%
Rare Candy	6	30.00%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Lunalium Z	1	7.69%
Marshadium Z	1	7.69%
Mewnium Z	1	7.69%
Solganium Z	1	7.69%
Tapunium Z	1	7.69%
Ultranecrozium Z	1	7.69%
Booster Energy	1	7.69%
Orb	1	7.69%
Adamant Orb	1	7.69%
Lustrous Orb	1	7.69%
Griseous Orb	1	7.69%
Omega Shard	1	7.69%
Alpha Shard	1	7.69%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Super Rod	1	2.78%
Nether Star	1	2.78%
Elytra	1	2.78%
Gold Bottle Cap	1	2.78%
Silver Bottle Cap	1	2.78%
Ability Patch	1	2.78%
Silver Hourglass	1	2.78%
Lens Gold	1	2.78%
Exp All	1	2.78%

This tier has no tier-specific reward pools.

Set 1 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Xs Exp Candy	10	32.26%
S Exp Candy	7	22.58%
M Exp Candy	5	16.13%
Dynamax Candy	7	22.58%
Rare Candy	2	6.45%

Set 2 always activates; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Pp Up	1	4.76%
Pp Max	1	4.76%
Calcium	1	4.76%
Carbos	1	4.76%
Hp Up	1	4.76%
Iron	1	4.76%
Protein	1	4.76%
Zinc	1	4.76%
Fire Stone	1	4.76%
Water Stone	1	4.76%
Leaf Stone	1	4.76%
Thunder Stone	1	4.76%
Moon Stone	1	4.76%
Sun Stone	1	4.76%
Dawn Stone	1	4.76%
Dusk Stone	1	4.76%
Shiny Stone	1	4.76%
Ice Stone	1	4.76%
Tm8 Blank	1	4.76%
Tr8 Blank	1	4.76%
Adrenaline Orb	1	4.76%

Set 3 has a 25.00% chance to activate; when it does, it gives 1 reward chosen at random by weight.

Reward	Weight	Drop chance
Old Rod	1	2.08%
Up Grade	1	2.08%
Fire Stone	1	2.08%
Water Stone	1	2.08%
Leaf Stone	1	2.08%
Thunder Stone	1	2.08%
Moon Stone	1	2.08%
Sun Stone	1	2.08%
Dawn Stone	1	2.08%
Dusk Stone	1	2.08%
Shiny Stone	1	2.08%
Ice Stone	1	2.08%

This tier has no tier-specific reward pools.