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Rathalos MHW.png
Official artwork of Rathalos from Monster Hunter: World.
Universe Monster Hunter
Debut Monster Hunter (2004)
Smash Bros. appearances Ultimate
Most recent non-Smash appearance Dragalia Lost (update, 2020)
Console/platform of origin PlayStation 2
Species Flying Wyvern
Gender Male
Created by Kaname Fujioka

A Rathalos (リオレウス, Liolaeus) is a type of flying wyvern from the Monster Hunter series, created by Capcom. They are one of the most well-known monsters in the series, and can appear in many varied habitats.


A Rathalos as it originally appeared in Monster Hunter.

A Rathalos is a recurring monster from the Monster Hunter series and is both the flagship monster for the original Monster Hunter and the mascot of the series as a whole. While many monsters of varying types are referred to as "Wyverns" in the Monster Hunter universe, the Rathalos closely fits the real-world classical definition of a wyvern, like an armless, winged dragon with fire breath and poisonous claws. It is sometimes known by its epithet "King of the Skies", and belongs to the Flying Wyvern family of monsters. In addition to its female counterpart Rathian, there are a number of Rathalos subspecies in existence, such as Azure Rathalos. Its description in Monster Hunter World states that "Rathalos descends upon invaders from the sky, attacking with poison claws and fiery breath", which is reflected accordingly in its attacks in Smash.

Armor, in both Blademaster and Gunner variants, can be created from materials procured from hunting Rathalos in its home series.

Much like Charizard, Rathalos is not explicitly referred to as a dragon in Western versions of its home series, but is treated as one in Super Smash Bros. Ultimate. This discrepancy is mostly due to the Western localization of Monster Hunter, as Flying Wyverns (such as Rathalos) are referred to as 飛竜種 ("flying dragon species") in the original Japanese, while Elder Dragon boss monsters simply use a different, antiquated kanji for "dragon" (古龍種, "old dragon species"). The Rathalos is also weak to Dragon elemental attacks, a trait possessed only by Elder Dragons and dragonlike wyverns. Spinoffs such as crossovers with Puzzle and Dragons and the Metal Gear series make it clear that Rathalos and many other wyverns are considered to be dragons outside of the taxonomy used in their home universe.

In Super Smash Bros. 4[edit]

As a costume[edit]

Mii Swordfighters wearing Rathalos Mail.

Armor created with Rathalos materials from Monster Hunter, called the Rathalos Blademaster Armor, appeared as a downloadable content costume for Mii Swordfighters. The armor's design is derived from Monster Hunter Tri and later entries in the series, excluding Monster Hunter: World.

In Super Smash Bros. Ultimate[edit]

Rathalos appears in Super Smash Bros. Ultimate, playing a role as a boss in Classic Mode and in the Adventure Mode: World of Light, and as an Assist Trophy.

As a Boss[edit]

Rathalos as he appears as a boss in Super Smash Bros. Ultimate.

The boss Rathalos fights as he did in his home series. He fights using his talons, tail swipes, fireballs, and flying into the background, and can stun his enemies with a screeching roar. During the fight, certain items will appear, those being Explosive Barrels, Deku Nuts, and Pitfalls. The Rathalos is vulnerable to all of the mentioned items, which will open him up to free damage before he recovers. The Rathalos can also be stunned briefly by breaking the armor on either his face or back, triggered by dealing sufficient damage to that area first. Attacking his tail will cause him to drop an item, a reference to how his tail can be severed for extra items in his home series.

When his Stamina drops to 0, the Rathalos will drop the ground and flail around before lying still, as in his death animation in the Monster Hunter series.

The Fighters that are assigned to fight Rathalos in Classic Mode at the end of their round are Yoshi, Marth, Duck Hunt and Piranha Plant. Bowser and Hero are also assigned to fight Rathalos but are not the final round. Bowser fights Mario afterwards, then Metal Mario (upon Mario's defeat), while Hero has two more regular rounds before fighting Robin, then a giant Charizard (upon Robin's defeat). Usually, Roar/Rathalos plays during the battle, but when Hero fights Rathalos, Fighting Spirits - DRAGON QUEST III plays, and Galeem/Dharkon during the boss rush.

There are nine main attacks that Rathalos uses in his boss battle:

  • Glides in the background, then races towards the fighting area, trying to hit the fighters.
  • Roars loudly, stunning opponents.
  • Dashes forward and performs a sliding tackle. The dash and the slide tackle both have hitboxes.
  • Swoops toward the fighters, attacking them with his clawed feet, poisoning opponents.
  • Drops downwards and hits opponents with his clawed feet, poisoning opponents.
  • Launches three large fireballs forward.
  • Flies into the background, and launches two large fireballs (three at higher difficulties), which when hitting a fighter or the ground, produce an explosion that gradually gets larger, much like a Smart Bomb. The explosions leave fire on the ground where they spread, which fades after a short time.
  • Flies backward and launches a fireball.
  • Spins around, trying to hit opponents with his tail.

World of Light[edit]

Rathalos is encountered in the Forest Hill sub-base found on Tortimer Island (possibly due to his kind appearing in forests in his home series), where the player can see him as soon as they enter this sub-base. The player must chase Rathalos around the sub-base area until they eventually corner the boss by approaching him from behind, which leads to the battle. Defeating Rathalos is necessary to weaken the shield protecting Galeem. He is later fought again in the true final during the second phase, where the player must fight every boss except Master Hand and Crazy Hand. He's the last of the Light Realm bosses to appear onscreen during this phase, which could indicate that he's the third boss in the game.

As an Assist Trophy[edit]

This giant beast will appear when summoned, spreading its wings to create a powerful attack. Rathalos has fire breath and a roar that stuns opponents. Finding an opportunity to get an attack can be difficult!
Super Smash Blog, Super Smash Bros. Ultimate Official Site
Rathalos attacking Link, Pikachu, Bowser and Inkling with its fireballs on Tortimer Island.

Upon being pulled from an Assist Trophy, a Rathalos is summoned by flying down from the sky and begins to attack his summoner's opponents. He uses the same attacks as the boss version, but he does not fly into the background for any attacks. Additionally, he is immune to Explosive Barrels, Deku Nuts and Pitfalls. He can be KO'd for a point, though he is very durable, has flinch resistance, and cannot be grabbed.


No. Image Name Type Class Cost Ability Series
Rathalos monster hunter.png
★★ 1 Air Attack ↑ MONSTER HUNTER Series



  • The Deku Nuts, Barrels, and Pitfalls that appear during the fight serve as a reference to the Rathalos' home universe's Flash Bombs, Barrel Bombs, and Pitfall Traps, respectively. Flash Bombs disorient monsters and cause flying monsters like Rathalos to crash to the ground, Barrel Bombs deal heavy damage to monsters caught in their blast radius, and the Pitfall Trap is one of the two trap types used to immobilize monsters so they can be either attacked with impunity or captured alive for extra rewards.
    • The Rathalos boss fight is the only one in Ultimate with item drops.
  • Rathalos is the first character in the series to appear both as an Assist Trophy and a boss.
    • Despite making his debut as a boss in that game, Ridley was planned to be an Assist Trophy in Brawl, but the idea was scrapped to keep him as a boss instead.
  • Rathalos' eye color differs from the main Monster Hunter series and in Super Smash Bros. Ultimate.
  • The appearance of Rathalos and Snake in Super Smash Bros. Ultimate marks the second time a Metal Gear character can fight Rathalos, as monsters from the Monster Hunter series, including Rathalos, appeared as bosses on extra missions in Metal Gear Solid: Peace Walker.
  • Rathalos is the only sub-world boss whose fight is not indicated by a dark circle with eyes on the map. This is because he always appears fully.
  • Rathalos is the only boss in the The Light Realm that didn't originate from Smash.
  • Rathalos is the only boss from a universe with no characters, items, or stages.
  • Besides Master Hand & Crazy Hand, Rathalos is the only boss who is fought by DLC characters.
  • As of patch 5.0.0, Rathalos is one of the common bosses in Classic Mode who isn't Master Hand, along with Galleom, being fought by 6 characters.