Small Monsters
 Felyne |
 Melynx |
 Shakalaka |
 Vespoid |
 Hornetaur |
 Great Thunderbug |
 Anteka |
 Popo |
 Kelbi |
 Mosswine |
 Aptonoth |
 Apceros |
 Giaprey |
 Velociprey |
 Genprey |
 Ioprey |
 Remobra |
 Cephalos |
 Hermitaur |
 Ceanataur |
 Bullfango |
 Conga |
 Blango |
Large Monsters
King Shakalaka |
Vespoid Queen |
 Giadrome |
 Velocidrome |
 Gendrome |
 Iodrome |
 Yian Kut-Ku |
 Blue Yian Kut-Ku |
 Yian Garuga |
Scarred Yian Garuga |
 Gypceros |
 Purple Gypceros |
 Hypnocatrice |
 Rathian |
 Pink Rathian |
 Gold Rathian |
 Rathalos |
 Azure Rathalos |
 Silver Rathalos |
 Khezu |
 Red Khezu |
 Basarios |
 Gravios |
 Black Gravios |
 Monoblos |
 White Monoblos |
 Diablos |
 Black Diablos |
 Tigrex |
 Nargacuga |
 Akantor |
 Ukanlos |
 Cephadrome |
 Plesioth |
 Green Plesioth |
 Lavasioth |
 Daimyo Hermitaur |
 Plum Daimyo Hermitaur |
 Shogun Ceanataur |
 Terra Shogun Ceanataur |
 Shen Gaoren |
 Bulldrome |
 Congalala |
 Emerald Congalala |
 Blangonga |
 Copper Blangonga |
 Rajang |
Furious Rajang |
 Kirin |
 Kushala Daora |
 Rusted Kushala Daora |
 Chameleos |
 Lunastra |
 Teostra |
 Lao-Shan Lung |
 Ashen Lao-Shan Lung |
 Yama Tsukami |
 Fatalis |
Crimson Fatalis |
White Fatalis |
Number of Monsters - Comparison with Previous Games
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| PSP | PSP | PSP | ||||||
| June 23/26, 2009 | August 29, 2007 | May 23, 2006 | ||||||
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Breakdown
- 11 new Large monsters were added to the game.
- 4 New Subspecies for old monsters: Plum Daimyo Hermitaur, Terra Shogun Ceanataur, Emerald Congalala and Copper Blangonga.
- 2 Monsters from Monster Hunter Frontier: Hypnocatrice and Lavasioth.
- Vespoid Queen, a Large Neopteron monster.
- Nargacuga, the game's flagship monster, and Ukanlos, the end-game monster.
- Furious Rajang was introduced
- King Shakalaka makes it's lone appearance in the franchise
- Yama Tsukami from Monster Hunter 2, previously not present in Monster Hunter Freedom 2 returns in this game.
- A hunter can now obtain High Rank Monoblos, White Monoblos, Yian Garuga and Lunastra materials, but only Yian Garuga will be available in Guild Quests. The other monsters will still be Village Quests-Exclusive.
- Yian Garuga will also have G-Level materials.
- Diablos and Yian Garuga have aesthetic changes in this game.
- There are quests in which Diablos only has One Horn, with the other already broken.
- There are quests in which Yian Garuga will either have its original scarred look, or a complete undamaged look.