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This page is the list of changes of Raid Bosses occurred in 2021.

In this year, Burn and Douse Drive Genesect, Therian Forme of Thundurus, Tornadus and Landorus, Xerneas, Yveltal, Zacian and Zamazenta were introduced.

List of Raid Bosses changes by year 20172018201920202021

January 1st

The New Year's featured different Raid Bosses.[1]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

Ho-Oh returned and the Mega pool was changed at 1 p.m. PST.[2]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

January 5th

The Unova Celebration Event featured Unova Raid Bosses, including the debut of Burn Drive Genesect.[3]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

January 12th

The Sinnoh Celebration Event featured Sinnoh Raid Bosses.[4]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

January 19th

The Hoenn Celebration Event featured Hoenn Raid Bosses.[5] Mega Ampharos was introduced.

Egg Raid Normal.png Tier 1
Aron
Aron Shiny Pokémon.png
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

January 26th

The Johto Celebration Event featured Johto Raid Bosses.[6][7]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

January 31st

Raikou replaced Entei.[6]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 2nd

The Team GO Rocket Celebration featured Dark- and Poison-type Raid Bosses.[8]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 4th

Suicune replaced Raikou.[6]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 8th

Raid Bosses returned to Johto set after Team GO Rocket Celebration.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 9th

The Lunar New Year 2021 featured different Raid Bosses.[9] Latias and Latios returned[10] and Mega Gyarados was introduced.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 14th

Valentine's Day 2021 featured different Raid Bosses.[11]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 19th

Raid Bosses returned the Lunar New Year set after Valentine's Day.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 20th

The Pokémon GO Tour: Kanto featured only Snorlax, Kanto region-exclusive Pokémon and Legendary Pokémon.[12]

Egg Raid Rare.png Tier 3
Egg Raid Rare.png Tier 4
Egg Raid Legendary.png Tier 5

February 21st

The Kanto Celebration Event featured Kanto Raid Bosses.[13]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

February 23rd

The Kanto region-exclusive Pokémon were available in their respective regions from February 23rd to March 1st.[14]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 1st

Landorus returned with shiny variant available. Mainly the types of tier 1 and 3 Raid Bosses are strong against Landorus.[15][16]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 6th

Tornadus returned with shiny variant available. Mainly the types of tier 1 and 3 Raid Bosses are strong against Tornadus.[15][17]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 9th

Searching for Legends featured different Raid Bosses.[18]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 11th

Thundurus returned with shiny variant available.[15]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 14th

Mainly the types of tier 1 and 3 Raid Bosses are strong against Thundurus in the set after Searching for Legends.[19]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 16th

Charge Up featured different Raid Bosses, including the debut of Therian Thundurus.[20]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 23rd

Raid Bosses returned to previous layout of Thundurus after Charge Up.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 24th

Weather Week featured different Raid Bosses.[21]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 27th

Special Raid Weekend featured Rayquaza that knew Hurricane.[22]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 29th

Rayquaza left.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

March 30th

Therian Tornadus became available. Mainly the types of tier 1 and 3 Raid Bosses are strong against Tornadus.[15][23]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 4th

Spring into Spring featured different Raid Bosses.[24]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 9th

Raid Bosses returned to previous layout of Tornadus after Spring into Spring.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 13th

Rivals' Week featured different Raid Bosses, including the debut of Therian Landorus.[25]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 19th

Mainly the types of tier 1 and 3 Raid Bosses are strong against Landorus in the set after Rivals Week.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 20th

Sustainability Week featured different Raid Bosses.[26]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 26th

Raid Bosses returned to previous layout of Landorus after Sustainability Week.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 27th

Incarnate Forme of the Forces of Nature returned.[27]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

April 29th

New Pokémon Snap Celebration featured different Raid Bosses.[28]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 3rd

Raid Bosses returned to previous layout of the Forces of Nature after New Pokémon Snap Celebration.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 4th

Luminous Legends X featured different Raid Bosses, including the debut of Xerneas.[29]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 11th

Pancham was added and Galarian Ponyta can be shiny in the second part of Luminous Legends X.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 15th

Mega Altaria was released after the end of May 2021 Community Day.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 18th

Luminous Legends Y featured different Raid Bosses, including the debut of Yveltal.[30]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

May 25th

The second part of Luminous Legends Y featured different Raid Bosses.[31]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 1st

The Legendary Titans returned.[32]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 8th

A Very Slow Discovery featured different Raid Bosses, along with the release of Mega Slowbro.[33]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 14th

Raid Bosses returned to previous layout after A Very Slow Discovery.[34]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 17th

Summer Solstice 2021 featured different Raid Bosses, along with the release of shiny Regigigas.[35] Yanma, Petilil, Alolan Raichu, Alolan Marowak and Floatzel were only available in the Eastern Hemisphere. Snorunt, Snover, Lapras, Piloswine and Walrein were only available in the Western Hemisphere.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 21st

Mainly the types of tier 1 and 3 Raid Bosses are strong against Regigigas in the set after Summer Solstice.[36]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

June 25th

Bidoof was added in Bidoof Breakout.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 1st

All tiers of raids on Bidoof Day were replaced with Bidoof.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5

July 2nd

Deoxys Defense returned. Mainly the types of tier 1 and 3 Raid Bosses are strong against Deoxys.[37]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 6th

5th Anniversary featured different Tier 1 Raid Bosses.[38]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 16th

Mewtwo returned. Mainly the types of tier 1 and 3 Raid Bosses are strong against Mewtwo.[39]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 17th

Day 1 of Pokémon GO Fest 2021 featured different Tier 1 and 3 Raid Bosses.[40]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 18th

Day 2 of Pokémon GO Fest 2021 featured all released Legendary Pokémon (at least one form) in Tier 5 Raids.[41]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5 (Wind Hour)
Egg Raid Legendary.png Tier 5 (Lava Hour)
Egg Raid Legendary.png Tier 5 (Frost Hour)
Egg Raid Legendary.png Tier 5 (Thunder Hour)
Egg Raid Mega.png Mega

July 19th

Raid Bosses returned to previous layout after Pokémon GO Fest 2021.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

July 23rd

Ultra Unlock Part 1: Time featured different Raid Bosses.[42]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

August 6th

Ultra Unlock Part 2: Space featured different Raid Bosses.[43]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

August 20th

Ultra Unlock Part 3: Sword and Shield featured different Raid Bosses, including the debut of Zacian.[44]

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega

August 26th

Part 2 of Ultra Unlock Part 3: Sword and Shield featured different Raid Bosses, including the debut of Zamazenta.

Egg Raid Normal.png Tier 1
Egg Raid Rare.png Tier 3
Egg Raid Legendary.png Tier 5
Egg Raid Mega.png Mega
Mega Pidgeot