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CR
Name
Type
Size
Alignment
Habitat
Tags
    Orlekto Storm King's Thunder
    Giant (storm giant)
    Huge
    Chaotic Evil
    NPC
    2
    Orog Legacy This doesn't reflect the latest rules and lore. Learn More Monster Manual (2014)
    Humanoid (orc)
    Medium
    Chaotic Evil
    Arctic(…)
    Orc
    1/8
    Orok Storm King's Thunder
    Humanoid (human)
    Small
    Chaotic Neutral
    Arctic(…)
    NPC
    1/8
    Orond Gralhund Waterdeep: Dragon Heist
    Humanoid (human)
    Medium
    Neutral Evil
    Urban
    NPC
    10
    Orthon Mordenkainen Presents: Monsters of the Multiverse
    Fiend (devil)
    Large
    Typically Lawful Evil
    Desert(…)
    10
    Orthon Legacy This doesn't reflect the latest rules and lore. Learn More Mordenkainen’s Tome of Foes
    Fiend (devil)
    Large
    Lawful Evil
    Desert(…)
    Devil(…)
    1
    Orvex Ocrammas Tomb of Annihilation
    Humanoid (human)
    Medium
    Neutral
    Urban
    NPC
    6
    Orzhov Giant Guildmasters’ Guide to Ravnica
    Giant
    Large
    Lawful Evil
    Orzhov
    10
    Oshundo the Alhoon Phandelver and Below: The Shattered Obelisk
    Undead (mind flayer, wizard)
    Medium
    Neutral Evil
    17
    Otherworldly Corrupter The Book of Many Things
    Aberration
    Medium or Small
    Typically Chaotic Evil
    4
    Othokent Ghosts of Saltmarsh
    Humanoid (lizardfolk)
    Medium
    Lawful Neutral
    Othovir Storm King's Thunder
    Humanoid (human)
    Medium
    Lawful Neutral
    NPC
    1/8
    Ott Steeltoes Waterdeep: Dragon Heist
    Humanoid (dwarf)
    Medium
    Chaotic Evil
    Urban
    NPC
    3
    Otto Waterdeep: Dungeon of the Mad Mage
    Dragon
    Large
    Chaotic Good
    Forest
    5
    Otyugh Monster Manual
    Aberration
    Large
    Neutral
    Underdark
    5
    Otyugh Legacy This doesn't reflect the latest rules and lore. Learn More Basic Rules (2014)
    Aberration
    Large
    Neutral
    Underdark
    6
    Otyugh Mutate Phandelver and Below: The Shattered Obelisk
    Aberration
    Large
    Typically Neutral
    0
    Owl Monster Manual
    Beast
    Tiny
    Unaligned
    Arctic(…)
    0
    Owl Legacy This doesn't reflect the latest rules and lore. Learn More Basic Rules (2014)
    Beast
    Tiny
    Unaligned
    Arctic(…)
    Misc Creature
    3
    Owlbear Monster Manual
    Monstrosity
    Large
    Unaligned
    Forest