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Rathian Subspecies
English Name N/A
Nickname/s Unknown, Black Rathian
English Name Unknown
Romaji Rioreia inishie-sei-shu
Japanese Name アンノウン / リオレイア古生種
Japanese Title ?
Korean Name N/A
Description and Information
Species Flying Wyvern
Element/s 20px
Ailment/s 20px and 20px
Weakest to File:Water.png, File:Thunder.png, File:Ice.png, File:Dragon.png
(On all parts, then on Neck & Stomach only in 4th & 5th Rage Mode along with File:Fire.png)
Head (Cutting) and Stomach (Impact) but gradually reverses with each rage mode for damage on Head.
Weakness Sign Limping
Signature Move 360° Fireball Barrage
Habitats Desert, Gorge, Jungle, Great Forest and Forest and Hills
Size File:Gold Crown Large.png 2303.8
File:Gold Crown Small.png 1151.9
Monster in Relation N/A
Chronological Appearances
First Appearance N/A
First JP Appearances 40pxForward 1
Last Appearances 40pxForward 1
Generation Frontier

A subspecies of Rathian introduced in Monster Hunter Frontier Season Forward 1. She is quite different from the other three Rathian forms, and considerably more powerful. She also has a wide range of new attacks.

New attacks include a fiery beam, a hip-check like move where she strikes the hunter with her wing, a gas released from under her body (similar to Gravios) that lowers defense, hurling three fireballs (similar to Espinas), flying up and firing fireballs around her in a 360 degree pattern, and flinging barbs from a wing at hunters.


  • Her Japanese name roughly translates to 'Ancient Rathian'.
  • Rathian Subspecies was first introduced as a dark image where only one eye was visible (see below).
  • She appears in either High Rank quests (repel only) or HR 100 quests (slaying only). The quest will start off with everyone in the basecamp, not being able to move for a while. The quest's monster's picture will then be "clawed" and an Unknown invasion message will pop out.
  • Rathian Subspecies is the only non-Elder Dragon monster that can be repelled when enough damage is dealt, besides the first generation Yian Garuga and the first Village Quest in Tri in which Lagiacrus is the target.
  • She is susceptible to Flash Bombs.
  • Rathian Subspecies seems to have different levels of Rage; she starts off calm, before entering the first stage, identified by huffs of black smoke being emitted from the mouth. If more damage is dealt, she enters a further state of rage, where she huffs yellow and blue flames. Her final stage is indicated by glowing eyes and red, inflamed wings. Generally speaking, she appears to use more unique and powerful moves as her level of Rage increases.
    • At the last level of Rage mode, she will be immune to all status ailments and most elements.
      • The level of Rage mode never drops to a previous stage; Rathian Subspecies will stay enraged until she dies or is repelled. She has 6 different modes and resistance, including 5 modes of rage.
      • High-Grade Earplugs will cancel out her roars in her 1st and 2nd rage mode. 3rd rage mode onward, Super High-Grade Earplugs is needed to cancel out her roars.
    • Unlike any other monster, this species of Rathian has an extremely fast status recovery rate. It is so fast, that inflicting her with an ailment or KO'ing her through Impact damage is nigh-impossible for 1 Hunter alone. Even in teams, it is an achievement by itself to pull off a KO on her.
      • KO only lasts for about 3 seconds when inflicted. Not even enough time to attack her while she is down.
      • When she enters her 5th and last rage mode she will also lose susceptibility to KO damage.
    • The attack she starts using from her 4th rage mode onward where she jumps towards hunters, takes hold of the ground below her with her talons - stopping the hunters in their tracks, then backflips and launches the hunters into the air to finish with another backflip in mid-air, can be easily avoided with the Quake Resistance +1 skill. It prevents the hunter from being stopped in their tracks, allowing them to move out of harm's way before she launches them into the air.
      • Hunters who are caught in this attack can be saved from certain death by comrades through the use of a Lifepowder before they hit the ground.
  • Her tail can be cut and carved once. You can carve her body 4 times.


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