The Marquis de Léon is a monster in Dragon Quest IV. He controls the Palais de Léon, in the form of a lion monster.



Has the appearance of the Hellion monster family


Not much is known about him as a human, although it is implied that he struck a deal with Psaro the Manslayer, which led to him and his entire kingdom being brainwashed into servitude (likely a result of naivety and lack of common sense). As a monster, Marquis de Léon was a brutal tyrant, striking fear into the citizens in not only his kingdom, but the entire continent. It is known that several unfortunate citizens were locked up in prison simply for displeasing him. While he worked alongside Balzack, the two did not appear to work very well together, as the Marquis admonished the latter for losing a battle and sent him away to another kingdom when given the chance. When two of his prisoners escaped prison and fled the continent, Marquis de Léon no longer allowed any form of immigration off the continent by banning all ship transportations.


Main games

Dragon Quest IV

Once the prince of Palais de Léon and the son of the previous king, Marquis de Léon is now a servant of Psaro the Manslayer. Having used the Secret of Evolution to transform into a lion-like monster, he imprisoned his father and took the throne for himself, claiming that his father passed away.

In Chapter 4, MeenaMaya, and Oojam infiltrate the palace in search for Balzack, who murdered the former two's father. They confront and defeat him in the hidden throne room. Having witnessed this (while not being in sight), Marquis de Léon reprimands Balzack for his failure and proceeds to defeat the three himself with ease. The three are then imprisoned in the same cell as the old king, who helps them escape.

Much later in Chapter 5, Marquis de Léon once again encounters the sisters, this time with the Legendary Hero in tow. By this point, the Marquis already sent Balzack away to Zamoksva, no longer requiring his help. He then once again engages the heroes in combat, resulting in his defeat.

Marquis de Léon's fate differs between the originals and the remakes. In the NES version, he dies after his defeat. In the remakes, he turns back to his human form, having no memory of his servitude to Psaro. This implies that he was brainwashed into serving the Master of Monsterkind rather than through his own free will. According to an NPC in Havre Léon, the prince made a deal with the devil in exchange for his soul, which may be the cause of his mind-control. Upon his defeat, the entire kingdom wake up from a trance, meaning that everyone was under Psaro's spell rather than just the Marquis.

#201 - Marquis de Léon
Beast Family
[[File:|100 px]]
HP MP Attack Defence Agility
950 123 80 18
Exp Gold Drop Full plate armour
5100 0 G
Note: None
Normal attack
Acts twice
Freezing Blizzard
Hot Gas
Haunts at:
Palais de Léon

Dragon Quest X

Normal phase
# - Marquis de Leon
Beast Family
[[File:{{{image}}}|100 px]]
HP MP Attack Defence Weight
6842 999 294 190 656
Exp Gold Drop Single phial
Metal slime coin
2858 40 G
Normal attack
Violent slashing
Psyche Up
Total War Cry
Haunts at:

Strong phase
# - Marquis de Leon
Beast Family
[[File:{{{image}}}|100 px]]
HP MP Attack Defence Weight
8074 999 318 194 656
Exp Gold Drop Magic water
Metal king slime coin
3430 45 G
Normal attack
Violent slashing
Psyche Up
Total War Cry
Haunts at:

Monsters series

Dragon Warrior Monsters

The Marquis de Leon, known as KingLeo, is a high-ranking Beast class monster obtained by having two Trumpeters breed in the Starry Shrine.

# - KingLeo
Beast Family
HP Wisdom Attack Defence Agility
2/5 4/5 3/5 3/5 5/5
Description: Uses its 4 hands & 4 arms skillfully in combat.
Spells and Abilities
Firebal (Lv. 4)
FrigidAir (Lv. 4)
BiAttack (Lv. 20)
How to breed:
Trumpeter X Trumpeter / MetalDrak / Balzak / GoldGolem
Roboster X GulpBeast / SuperTen / Unicorn / Trumpeter / DarkHorn / MadCat

Dragon Warrior Monsters 2

KingLeo is obtained the same way as in Monsters.

Dragon Quest Monsters: Caravan Heart

Dragon Quest Monsters: Joker 2

The Marquis de Leon appears as a Giant Monster boss after encountering Captain Crow for the fourth time, which is accessible after defeating the final boss of the storyline.

Additionally, he can be synthesized using a Buffalogre and Mohawker, and can be synthesized with a Hyper heyedra to create a Gripevine. He is also one of the component monsters for obtaining Leonyx. The others are Wildcard, Orochi, and Don Mole .

His body size is 2.

Dragon Quest Monsters: Joker 2 Professional

Dragon Quest Monsters: Terry's Wonderland 3D

Dragon Quest Monsters 2: Iru and Luca's Marvelous Mysterious Key

Dragon Quest Monsters: Joker 3 Professional

Dragon Quest Monsters: Super Light

Battle Road series

Dragon Quest: Monster Battle Road Victory

Heroes series

Dragon Quest Heroes

The Marquis de Leon is fought by the heroes at the top of the Pillar of Light.

Dragon Quest Heroes II

Other games

Dragon Quest of the Stars

The Marquis de Leon is fought by the three heroes while travelling on the continent of Batraccia. Originally defeated many years earlier by the Questocrat Gaius, he was brought back to life by the dark Squirril Ferril. He tries to make the elf queen his bride, but the three heroes stop him, enraging the Hellion. When they reach his hideout, he battles them, but loses the fight. Ferril states that he didn't obey him and mockingly thanks the three heroes and Cyril for defeating him. He also appears in the DQIV event, reprising his role of a boss. Just like IV, he speaks with a French accent.


Other languages

Other languages
French Lord Lionel
German Marquis de Léon
Spanish Marquis de Léon
Italian Marchese de Léon
Dutch Unknown
Swedish Unknown
Greek Unknown
Portuguese Unknown
Russian Unknown
Chinese Unknown
Korean 킹 레오

Related monsters

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