List of Raid Bosses changes/2017

This page is the list of changes of Raid Bosses occurred in 2017.

Raid Battle was introduced in this year as one of the biggest game element in Pokémon GO. The Bonus Challenge after defeating the tier 5 Raid Boss is the primary method to catch Legendary Pokémon. In this year, Lugia, Articuno, Moltres, Zapdos, Raikou, Entei, Suicune, Ho-Oh and Groudon were introduced and Mewtwo was only obtainable in EX Raid Battle.

June 23rd
The launch of Raid Battle included tier 1 to 4 Bosses.

July 22nd
The first Legendary Pokémon Articuno and Lugia were released in tier 5 Raid Battles.

July 31st
Moltres replaced Articuno.

August 7th
Zapdos replaced Moltres.

August 13th
All Legendary Birds along with Lugia were available until the end of the month.

August 14th
Mewtwo was released in EX Raid Battle only.

August 31st
The Legendary Beasts Raikou, Entei and Suicune took place of tier 5 raids. They were exclusive to specific region each month and switched locations at the beginning of each month.

November 4th
Tier 1 to 4 Raid Bosses were updated for the first time.

November 21st
Magikarp returned to Tier 1.

November 27th
Ho-Oh joined the tier 5 raids until December 14.

December 1st
The Legendary Beasts left.

December 8th
The main release of Hoenn Pokémon made Mawile and Absol become the first non-Legendary Pokémon to be raid-exclusive.

December 14th
Ho-Oh left, leaving around a day with no tier 5 raid for the first time.

December 15th
Groudon became available.

December 21st
Wailmer was added to replace Metapod in tier 1 with the release of aquatic Hoenn Pokémon.