Rage Mode

Rage is when a monster has taken enough Physical Damage and reacts by becoming much more aggressive. Many monsters signal that they are entering an enraged state by roaring but some, like Yian Kut Ku and Gypceros, jump up and down. Those monsters that don't display still have signs that they are enraged, such as markings and/or huffs of smoke coming out their mouths. The attack, defense and agility for each monster significantly increases (to the point that some will one hit KO enemies), as well as certain tolerances (in the case of Diablos and Monoblos, they become unaffected by Sonic Bombs while enraged). It's even possible to use Pitfall Traps on an enraged Rajang or Nargacuga, who normally avoid Pitfall Traps.

How much the stats are increased depends on the monster. Monsters usually get enraged more often when they are close to death, a famous example being the Diablos. Rage can also be induced by waking certain sleeping monsters, and in the case of Yian Kut-Ku, by stunning it with a Sonic Bomb or explosive, or occasionally by breaking a body part (a Shogun Ceanataur becomes 'locked' into Rage when one of it's claws is broken).

Most of the time, if a monster is in the middle of an attack and a hunter drives them into rage, they will stop that attack and do the Rage Mode indication.

Some monsters, such as a Khezu or a Tigrex, sometimes go into a state of "constant rage", in which once that monster is out of rage mode, one hit could set it off again.

Rage Statistics

These are the increases in attack, defense and agility that some monsters experience in Rage Mode.

Monster	Attack	Defense	Agility
Cephadrome	+150%	+100%	+110%
Yian Kut - Ku	+120%	+100%	+130%
Blue Yian Kut - Ku	+130%	+100%	+140%
Gypceros	+130%	+80%	+130%
Purple Gypceros	+140%	+80%	+140%
Rathalos	+130%	+100%	+130%
Azure Rathalos	+130%	+100%	+140%
Silver Rathalos	+140%	+110%	+140%
Rathian	+130%	+100%	+120%
Pink Rathian	+130%	+100%	+130%
Gold Rathian	+140%	+100%	+140%
Khezu	+140%	+110%	+130%
Red Khezu	+140%	+110%	+140%
Plesioth	+150%	+80%	+110%
Green Plesioth	+150%	+80%	+130%
Basarios	+130%	+120%	+110%
Gravios	+150%	+120%	+110%
Black Gravios	+150%	+120%	+130%
Monoblos	+150%	+100%	+130%
White Monoblos	+150%	+100%	+140%
Diablos	+150%	+100%	+130%
Black Diablos	+150%	+100%	+140%
Lao - Shan Lung	+150%	+120%	+150%
Ashen Lao - Shan Lung	+150%	+120%	+150%
Kirin	+150%	+100%	+130%
Yian Garuga	+150%

Examples

Monster	Signs of Rage	Notes
Yian Kut-Ku/Blue Yian Kut-Ku	Huffs orange smoke from its beak and ears open up. {C}Will hop up and down angrily when entering rage.(Note: If you made him enter rage with a sonic bomb,crag shot or barrel bombs,he will do it twice.)	Immune to sounds. Charges more often.
Yian Garuga	Huffs orange smoke from its beak. {C}Will hop up and down angrily when entering rage.	Able to avoid Pitfall traps with it's "Trap-avoiding slyness." Performs Death-Flip more often.
Cephadrome	Huffs sand.	Immune to sonic bomb.
Plesioth/Green Plesioth	Huffs white steam from mouth	Comes out of the water more often.
Gypceros/Purple Gypceros	Huffs purple poison gas and eye rings glow orange or green species wise and their head crests will flicker rapidly. Will hop up and down angrily when entering rage.	Uses the Flash more often.
Rathalos (and subspecies)	Huffs smoke. (In MH3, mouth will constantly house a lit flame) Roars when entering rage.	Charges more often. Flash Bombs are ineffective and Pitfall Traps do not work as often as well.
Rathian (and subspecies)	Huffs smoke. (In MH3, mouth will constantly house a lit flame) Roars when entering rage.	Launches backflips more often.
Monoblos/White Monoblos	Huffs black smoke and red markings appear on its 'Crown'. Will taunt with black smoke coming out of its mouth when entering rage.	Immune to Sonic Bombs.
Diablos/Black Diablos	Huffs black smoke Will taunt with black smoke coming out of its mouth when entering rage.	Immune to Sonic Bombs.
Gravios/Black Gravios	Huffs white smoke. Gives a short roar when entering rage.(Not the same roar when he spots you.)	Uses Heat Ray attack more often.
Tigrex/Tigrex Subspecies	Huffs smoke, red veins on arms and neck, eyes bright red, and drools. Jumps back and roars when entering rage.	Becomes faster and easier to get it's teeth stuck on walls. Lower's defense in rage. (Subspecies)Can use super roar.(can only use when enraged).
Congalala/Emerald Congalala	Nose inflates and becomes red. Butt becomes bright red. Breathes fart fumes. Stands on hind legs and farts when entering rage.	Will fart nearby Hunters while being stuck on the Pitfall Trap. Farts more in rage.
Kirin	Mane glows intensely and white electric waves surround it.	Hurts any hunter close enough to it. Speed increases greatly.
Blangonga/Copper Blangonga	Huffs icy or sandy smoke, species-wise and the cheeks will change color. Roars when entering rage.	Speed increases, digs,back-kicks and ice breath(Blangonga only) more often.
Akantor	Certain body parts flare red and huffs smoke. Eyes become bright red. Roars when entering rage.	Immune to Sounds.
Ukanlos	Huffs white smoke Roars when entering rage.	Immune to Sounds.
Kushala Daora/Rusted Kushala Daora	Huffs smoke. Roars when entering rage.	Much more airborne in Rage.
Teostra/Lunastra	Huffs smoke. Roars when entering rage.	Flamethrower range doubles in length. Able to perform Fire Claw Attack.
Chameleos	Huffs green smoke that reveals its position and boss battle music plays. They will stand still and start moving their neck in an odd manner, as if searching for more attackers, when entering rage.	None.
Daimyo Hermitaur	Foams white bubbles from mouth.	Does water blast more often.
Shogun Ceanataur	Foams white bubbles from mouth and claw size increases. You will hear a "Zing!" sound when he enters rage. Its actually the Shogun extending his claws.	Claws open up and double in length. Stays in rage mode permanently if one or both claw has been broken. Does the Scythe Clothesline more often.
Bulldrome	Huffs white smoke.	Shakes head a lot right when it gets out of rage.
Rajang	Becomes almost completely gold; Back hair stands up. Golden Rajang's fur stands up and it's surrounded by it's Electric Aura. {C}Jumps back suddenly and change in colour when entering rage.	Can only be trapped with Pitfall Traps while in rage mode. The HR9 Golden Rajang cannot be trapped with Pitfall Traps when he is in rage, because he will merely jump out of it and cause it to vanish.
Khezu/Red Khezu	Huffs white static smoke. {C}Sniffs the ground when entering rage.	Much Faster in rage, Thunder surrounds it on most of its Jumping Attacks.
Basarios	Huffs purple smoke. {C}Short roar when entering rage.	Gains ability to shoot fireballs. May do the heat ray similiar to the Gravios' heat attack, and beware because it moves its head side-to-side when it shoots the heat ray.
Lao Shan-Lung/Ashen Lao Shan-Lung	Walks faster	None
Shen Gaoren	Walks faster	None
Fatalis/Crimson Fatalis	Huffs white smoke.	Goes into Armor Mode (Crimson only).
White Fatalis	Red markings and static on body.	Goes into Armor Mode with enough damage dealt.
Nargacuga	Glowing red eyes and the tail grows spikes. Jumps suddenly with tail spikes showing and quickly roars. (Note: Do not ever mistake Tail Slam For Rage Mode!)	Can be trapped with Pitfall Traps. Tail can only be cut in Rage mode.
King Shakalaka	BBQ fire gets larger and shoots fire balls from its BBQ spit.	Speed and attack power increase.
Hypnocatrice	Huffs light blue smoke. Back feathers stand. It will raise its head and then look straight at the hunter, with the tail standing up and making a screechy sort of noise when entering rage.	Speed increases, performs Triple Sleep Balls attack and Jump Kicks more often.
Yama Tsukami	Eyes glow Yellow.	Uses the Wind Tunnel more often, right after the whisker grab.
Espinas/Orange Espinas	Soft pink/orange color spreads over its back and the top part of its wings.	Gains vulnerability to physical attacks.
Akura Vashimu	Blood Colour changes from blue to yellow.	Gems on back and claws glow.
Great Jaggi	Huffs white smoke.	Will body slam more often.
Great Baggi	Huffs white smoke.	Will body slam more often.
Qurupeco	Huffs white smoke and the tail becomes red.	Will be more likely to summon boss monsters.
Barroth	Steam rises from its cranial vents.	Charges quicker and charges more.
Uragaan	Huffs black smoke.	Fire cloud will be used instead of sleep cloud.
Deviljho	Huffs dragon element, body expands, old scars show up.	Chest and elemental defense becomes weaker. Gains ability to use dragon breath.
Royal Ludroth	Huffs water.	Uses water spit more often.
Gobul	Huffs water, puffs up body.	It's back will deflect any weapon with green sharpness or less.
Agnaktor	Huffs orange smoke.	Will use the 360 fire beam.
Lagiacrus	Huffs blue smoke, dermal spikes glow white.	Uses thunder attacks more.
Barioth	Eyes glow red.	Moves faster.
Gigginox/Gigginox Subspecies	Upper body turns black. Upper body turns red(subspecies).	Its body turns more strong,but his tail turns weak
Jhen Moran	None.
Ceadeus	Neck and chest glow red.	Only occurs in the second part of the hunt.
Alatreon	Body glows white and emerald (in some areas).	It will also huff the element of the attack it will use next (ie. electricty for a thunder attack, flames for a fire attack, etc.).
Zinogre	Electricity surrounds body, enlarged spikes, attacks faster and becomes stronger.	Jinouga will gather energy in order to increase its attack power causing a thunder-like blast around its body.