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Professor Oak's boss NPC, which illustrates the overworld coloration of boss-NPC names.

Bosses, oftentimes phrasally referred to as boss NPCs, are transcendent battle NPCs that can be challenged by qualifying players for an assortment of high-end rewards and feature-unlockings.

Since bosses constitute the strongest NPC-deployed lineups in the game—having maximal stats, 100 EVs across the board, and even exceeding the maximal levels that are attainable by players—they are considered the fulcrum of the PvM (player versus monster) aspect in Pokémon Revolution Online.

With the Boss rework, started at Dezember 2018, many bosses changed. Their teams, rewards, requirements and also Pokémon, the Pokémon's Ev's and level changed. The new, reworked, Bosses do also have three different difficulty grades.

Boss NPCs are identifiable with their distinctively red-colored names on the overworld. Some bosses might not be visible to the players until their prerequisites have been satisfied.

Boss-NPC characters are predominantly modeled after either Gym Leaders, staff members, or plot characters.

Boss rework 2019

The boss rework was issued and is still ongoing to improve the boss NPC's in general. All reworked bosses are coded in Python and not in Xanascrip anymore, which gives new opportunities. Reworked bosses can now have held items as well. One of the biggest benefits is, that the Python script sees when if the server crashed in order to not count a lose in case the player fought against the boss while the server crashed. In such a case the player can simply re-figth the boss.

The boss rework implies a challenge for players on any experience level who do enjoy doing bosses because of the three difficulty level every not story related boss has, which ensures that bosses are challengable for newer players and also be a chellange for those who have a high Pokémon knowledge. Boss teams are decisively reworked and only contain level 100 Pokémon. EVs and hold items do vary among other things - also depending on the difficulty level.

  • Easy: bosses have no EVs and no hold items; as well as a weakened moveset. Consecutive win rewards are also not available.
  • Medium: bosses have 252 EVs in each stat and hold items.
  • Hard: bosses have 400 EVs in each stat and hold items. Furthermore, the player is not allowed to use in-battle items such as |Revives.

Reworked bosses

Yet (10.2.2019) reworked bosses are:

ChuckKantoSaffron City (Gold's Gym)12 days
ErikaKantoViridian Maze12 days
Guardian (Entei)KantoRoute 25 (Route 25 Cave)12 days
Guardian (Raikou)HoennRoute 110 (Secret Base Alpha)12 days
Guardian (Suicune)JohtoLage of Rage (Secluded Lake)12 days
KoichiKantoSaffron Dojo12 days
NaeroKantoCerulean Cave B1F12 days, standardly; 6 with active membership
LoreleiJohtoIce Path B2F12 days
NikolaKantoUnknown Place (Trainers Valley)21 days
Officer ShamacKantoPewter City (Jail)12 days
Professor ElmJohtoRuins of Alph (Research Center)12 days
Professor OakKantoCinnabar Island (Lab Room 2)12 days
Shary & ShauiKantoLove Island (House 1)12 days


Old bosses

Given their enviable rewards and stature as cream-of-the-crop end-game content, they typically will impose lofty requirements in order to be challengable.

While requirements will boss-specifically vary, there are many commonalities and baselines that are shared among them; the more prevalent ones include 200-plus hours of playtime and six level-100 on-hand Pokémon.

Reworked bosses

The only requirement is to be champion of the region the boss stays on. The scale of the rewards is controlled by three different difficulty grades - Easy, Medium and hard.


Some boss NPCs are compulsory in order to unlock essential features or progressional thresholds; for example, Youngster Joey must be defeated in order to advance to Hoenn, since he will occlude the transregional porter thereto until he is defeated. For the most part, however, boss NPCs are optional to battle but tremendously rewardful for those who defeat them, as they offer Pokémon, items and other commodities that might not be as handily obtainable, otherwise.

Incremental thresholds

Old bosses

While prizesets will boss-specifically vary, most of them follow the same paradigm of reward-distrubiting. Most offer initially randomized prizes—typically enviable Pokémon or items at commensurately varying odds—until the incremental thresholds are met; typically after three-consecutive wins against the boss, they will allow you to select the prize, sometimes augmenting the selectable prizes to extra prizes that might not be rewardable, otherwise.

The consecution of battles will reset either upon losing to the boss or after the third-consecutive win. Bosses typically will remind you what streak you are on after defeating them.

Reworked bosses

Yet, no story related boss has been reworked. Reworked bosses have rewards depending on the difficulty level you beat them. As harder the difficulty as more valuable is the reward normally. The exact reward is random generated based on a list of possible rewards and is contains at least a money reward. There are three difficulty level: Easy, Medium, Hard. For extra rewards, the Medium and Hard level have a three time win streak.


Many bosses will reward Pokémon that might either be unhuntable or ultra-rare, otherwise.

Boss-rewarded Pokémon may also have potential shiny counterparts, but most stipulate that the incremental thresholds must be met before the shiny chance is possible.


Many bosses are also multifunctional in the sense that they may serve as vendors or as move tutors. In these cases, they typically will require being battled at least one time before their commercial services are accessible; this entails that the requirements are satisfied, or they may not have any accessibly serviceable feature.

Supplementarily, an amount of Pokémoney ranging from PokémonDollar.png1-PokémonDollar.png10,000 will also be rewarded upon defeating the NPC.

Challengable bosses


All presently challengable bosses are tabulated hereunder. Click on the boss name to access its individualized page for much more elaborate information regardingly.

ArchieHoennMarine Cave (Cave of Origins)Not rechallengable
Ash WestbrookSinnohSpear Pillar12 days
BattleBotSevii IslandsTwo Island House (Temporarily moved to Dock Island House 2)15 days
BrockKantoDiglett's Cave12 days
BrunoJohtoMt. Mortar Lower Cave12 days
BugsyJohtoAmazon Forest12 days
ChuckKantoSaffron City (Gold's Gym)12 days
ErikaKantoViridian Maze12 days
Gamers Pewdie and DiepyJohtoGoldenrod Gaming Corner12 days
GeorgeKantoPewter Jail12 days
Gingery JonesHoennFeral Site (Fiery Path)12 days
Guardian (Entei)KantoRoute 25 (Route 25 Cave)12 days
Guardian (Raikou)HoennRoute 110 (Secret Base Alpha)12 days
Guardian (Suicune)JohtoLage of Rage (Secluded Lake)12 days
Jessie & JamesKantoCeladon City12 days
KoichiKantoSaffron Dojo12 days
Lance (Cerulean Cave quest)JohtoDragons Den B1F12 days
Lance (Dragons Shrine)JohtoDragon Shrine12 days
LetrixSinnohValley Windworks12 days
LinkSinnohTwinleaf Town (House 2)12 days
LoreleiJohtoIce Path B2F12 days
Lt. SurgeHoennNew Mauville12 days
MaribelaSinnohFloaroma Meadow12 days
MaxieHoennTerra Cave (Cave of Origins)Not rechallengable
MistyJohtoRoute 4112 days
MortyHoennMt. Pyre 4F12 days
NaeroKantoCerulean Cave B1F12 days, standardly; 6 with active membership
NeroliJohtoIlex Forest12 days
NikolaKantoUnknown Place (Trainers Valley)21 days
Officer JennyOrange IslandsPinkan City (Pinkan Lighthouse 2F)12 days
Officer ShamacKantoPewter City (Jail)12 days
Professor BirchHoennVerdanturf Town (House 2)12 days
Professor ElmJohtoRuins of Alph (Research Center)12 days
Professor OakKantoCinnabar Island (Lab Room 2)12 days
Professor RowanSinnohJubilife City School12 days
RedKantoMt. Silver SummitOne-off battle; not rechallengable
SageJohtoViolet City (Sprout Tower F)12 days
SaphirrSinnohRoute 22712 days
Shary & ShauiKantoLove Island (House 1)12 days
StevenHoennValley of Steel (Underground)12 days
SuhuzenHoennDesert Ruins12 days
TerminatorKantoMt. Silver Moltres Chamber11 days
The Pumpkin KingKantoRoute 612 days
ThorJohtoWhirl Islands B4F12 days
ToothlessHoennAbandoned Ship B1F Room 1 (Route 108)12 days
Youngster JoeyKantoInterposed between the multi-partitional Elite Four buildings at Indigo PlateauNone if you lose; not rechallengeable if you won


All bosses on the tabular list below are discontinued bosses, meaning that they previously existed but were removed from the game, made inaccessible, or have been substantially reworked.

9oomy & GouseruKantoLove Island (House 1)12 days
GreinjackJohtoIn front of Blackthorn City's Pokémart12 days
Guardian KaguyaPhantasm LandUnison Mountain Summit2 days
KagawaVulcan IslandKalijodo Lake6 days
Mayor GorgePhantasm LandUnison Mountain 3F2 days
Officer WargreymonKantoPewter City Jail12 days
Old Lady JaniceHoennLilycove City (Motel 2F)12 days
RavineHoennMt. Pyre Summit12 days
Sgath & KeresKantoLove Island (House 1)12 days
ShieonCryofrostMistpeak Valley House12 days
Summer Guardian LimeVulcan IslandKalijodo LakeNot rechallengable
Summer Guardian RinVulcan IslandVulcan Island ShoreNot rechallengable
ZetsuPhantasm LandBittersweet Cave 4F3 days

Cooldown time


Most bosses will be rechallengable after 12 days have elapsed; the main exceptions are quest-compulsory bosses, which either cool down after 2 hours or will not be rechallengable by virtue of the fact that simply battling them will suffice to unlock the progressional reward.

Naero is another anomaly, wherein the boss' cooldown time will be halved to six days if battled with active membership status at the juncture the battle was initiated.


The cooldown-checker performing a confirmatory check on Brock's status.

The cooldown times can be checked by speaking to the cooldown-checker in Celadon Office 2F, Goldenrod City House 1, Slateport City House 1, or Canalave City House 1; they will give you a confirmatory response as to whether or not they are ready.

If you seek a more quantitative answer on the remaining cooldown time, you can interact with the boss in question; they will quantify how much time is remaining before they are rechallengable when asked.