Ratatoskr is a minor figure in Norse mythology; a giant squirrel who lives in the branches of the World Tree Yggdrasil and carries insulting messages between Nidhoggr, the dragon gnawing at its root, and the nameless eagle who sits atop its highest branch. It's also the plural for Ratatosk, a species of humanoid flying squirrels who inhabit Yggdrasil the World Ash in the Great Wheel. They were introduced as a minor enemy race in Planescape, and haven't officially appeared since then. Outside of Yggdrasil, they are most commonly found in Arborea and "sylvan woodlands", so they're arguably also an appropriate fit for the Feywild or Plane of Faerie.
Ratatosk are tree-dwelling gliders, able to leap wide chasms from branch to branch of Yggdrasil with sure-fooled ease. Ratatosk serve the World Ash as a sort of messenger system, but they are also very antagonistic to anything they feel doesn’t belong in their home tree, such as most planars, especially tieflings, dwarves, and githzerai. They tolerate elves, most Ysgardians, and bariaur, though only just.
The ratatosk steal the goods left for the spirits and the gods, and have little regard for anyone or anything but themselves. If properly bribed, they carry messages to or from any plane connected by Yggdrasil. These bribes usually take the form of the enormous, sterile seed pods of Yggdrasil.
Ratatosk look like humanoid flying squirrels, with furry membranes between their arms and legs and a large, flattened tail that they use to direct their gliding. They wear no clothing other than harnesses for gear and protective hats. Their fur is thick enough to keep them comfortable in all but the coldest winter freezes. Their color varies from black to gray to brown to red, though each pack has almost entirely the same coloring. Thelr tails are uniformly darker than the rest of their fur, usually matching the bark or the nears trees.
Ratatosk speak their own language, the language of birds, and the Ysgardian common tongue.
Ratatosk are panicky fighters, more willing to attack en masse than risk single combat. They are careless of their own lives, but they lash out violently when their children are threatened. Even then, their strength comes from panic rather than bloodlust. Their sharp claws strike for 1d4 points of damage each.
When they are forced to fight, ratatosk prefer to swoop out of a tall tree’s branches to attack. From the dive, they strike with their clawed hands and feet for double damage, then climb up Yggdrasil to dive again.
All ratatosk are excellent cursers, and their insults act as a taunt spell on any opponent who fails a saving throw versus spell. This ability is partly magical, and the ratatosk need not be able to speak the language of their target for their taunts to be effective. However, only creatures of low intelligence or greater are affected.
Many groups of ratatosk have adopted iron weapons as well as their natural claws, but these are all imported or stolen, since the ratatosk have no skill at forgecraft. In any given group, 30% of the ratatosk are unarmed, 20% have slings, 5% have staff slings, 10% carry spears, 20% carry hand axes, and 15% carry whatever weapons they have scavenged, such as swords, axes, polearms, and bows. The ratatosk steal or loot more weapons whenever they can.
While gliding, ratatosk can twist and dodge quickly enough to avoid missiles fired at them. A ratatosk can avoid a missile that would normally hit by rolling its current hit points or less on 1d20. This also applies to magical missiles that require an attack roll, such as Melf’s acid arrow or minute meteors.
Each pack has a ruling male and female who are the absolute rulers of the pack, a mated pair called the fireholders. The fireholders have 3 Hit Die and do 1d6 points of claw damage, but are otherwise identical to their followers. Any pack member can challenge the rulers, but those who lose a challenge are exiled or reduced to the lowest rung of the pack’s social ladder. The two leaders are the only ratatosk who mate and bear litter; all other pack mumblers are prevented from mating by the pack leaders. The only exceptions are the priests of Yggdrasil, who can reach 7th-level of ability and gain 1 additional Hit Die after reaching 5th level. Only 1 in 4 packs has a priest, but those that do always ask the priests for their counsel in any major decision.
The reaction of ratatosk packs to outsiders varies widely. Some packs are tricksters, others are very solemn — their personality is dependent on their leaders. All the ratatosk strive to be like their pack leaders, imitating their habits and behavior. Some pack leaders imitate powerful creatures that they meet, admire, and then “adopt”, and the poor adoptive parent is followed around for weeks or months by dozens of bright-eyed ratatosk that do whatever he does.
Ratatosk use fire sparingly, with only a single firepot held by the two leaders. Most food is eaten cold, and fire is used for light at night and for heat in winter. They fear the effects of fire on Yggdrasil and discourage others who use it. For them, burning Yggdrasil’s wood is a sacred act, and others who casually toss a few logs on the fire often wake up to find their mounts are loose, their food is scattered, and their tent has collapsed around them.
When the young males reach their full growth they are thrown out of the pack to survive on their own. They must steal brides away from an established pack to start their own group. Those that fail must join as lesser members with little status, never to become leaders. Young females are never thrown out of the pack and are protected by all other members of the pack, who know that she is the target of raiders.
Yggdrasil itself is the god of all ratatosk, and they fight to the death to protect her (in their eyes, Yggdrasil is a female tree). The legends of the ratatosk say that they were hatched from a huge nut at the top of the tree, and that they are therefore both the children and the chosen — the protectors or Yggdrasil. It’s useless to argue this point with the creatures: no story of Nidhogg or the eagles of Yggdrasil will convince them that the tree doesn’t love them best, and arguments about their origins can quickly lead to bloodshed. Whether Yggdrasil wants them to protect her doesn’t seem to be a question that occurs to them.
The ratatosk can’t seem to decide on where they like to live. A few packs of ratatosk are wanderers, nomads that range Yggdrasil from roots to crown. Each night, they weave tree nests from branches and leaves, as a way to avoid unwanted guests. The nests are built to just hold their weight, so that heavier creatures cannot reach them. When cold weather threatens, these ratatosk often migrate to Arborea for its mild winters.
Most ratatosk live in small lairs gnawed out of the wood of the World Ash or other impressively gigantic trees. Each burrow is large enough for a single adult and one young ratatosk. The entrance is sealed with the ratatosk’s own tail when it is sleeping, simply but effectively camouflaging the entryway. If the pack grows large enough, these small burrows are expanded, but most packs are dispersed or kept small by predators and famine.
A few tribes of ratatosk live in large hollows and dens dug deep into the tree’s living wood. In winter, the settlements are hibernation dens, small hollows that can hold the entire pack in tightly curled, dreamless slumber. Nearby, the ratatosk always hoard winter food in dozens of specially prepared nut storage caches.
The ratatosk love riddles and sometimes tease and taunt Yggdrasil’s travelers with them until the squirrel-folk get an answer. Some bloods have even gained the respect and aid of the ratatosk with riddles of their own. The following are a few of the more common ratatosk riddles:
Falling to earth, rising to the sky, Before I fall again, years must go by. [A nut.]
Shivering but fearing flame, Wanting sun but needing rain. [A leaf.]
Never an acorn, Taller than stars, His fingers hold us, Our fingers hold him. [Yggdrasil.]
Ever moving under trees, Startled by the slightest breeze, We need the sun to join our play, And hide ourselves on rainy days. [Shadows in the forest.]
Ratatosk eat nuts, roots, berries, fruits, insects, growing bark, and tender leaves. They also eat the eggs of the eagles nesting in Yggdrasil’s branches — one or the few foods they bother to cook. In the spring, they eat the young shoots and branches that Yggdrasil offers. A few groups of ratatosk have moved along Yggdrasil’s branches into the largest and most ancient woodlands of Arborea and Ysgard, where they are prey for giant eagles, giant wolves, giant owls and giants, who don’t seem to realize that the squirrel-folk are sentient creatures and spit them like rabbits.
Whilst Ratatosk have never had an official PC writeup, fans of Planescape in AD&D did try their own hand at statting them up for that edition, and the results can still be found on the sadly long-abandoned Mimir.net fanpage... but we're reprinting them here, because we're nice like that.
Ratatosk a humanoid race resembling giant squirrels, who inhabit Yggdrasil, the plane-spanning World Ash. They appear as 4-5 foot flying squirrels with a spark of intelligence in their eyes. They have furry membranes between their arms and legs they use to glide, and a flattened tail they use to steer themselves while in the air. Their black, grey, red, or brown fur is usually the only clothing they wear aside from harnesses for gear and protective helmets. Their language resembles chatters and chirps. Ratatosk may spend a proficiency slot to learn the language of birds, as well as the common tongue and any Ysgardian or Arborean language. They are very curious and often mischievous.
The ratatosk race inhabits Yggdrasil, and views her (ratatosk see Yggdrasil as female) in a spiritual light, and actually worship the World Ash. The playful ratatosk will fight to the death to protect her. They are very wary of fire, because of the destruction it can cause their wood home. Few ratatosk would ever dream of leaving Yggdrasil, but it does happen. Some have been ostracised and outcast by their brethren. Some become lost. And some are simply overwhelmed by curiosity and wanderlust, often latching onto an adventuring party as a new source of authority.
- Ability Score Minimum/Maximum: Strength 3/18, Dexterity 11/18, Constitution 3/18, Intelligence 3/18, Wisdom 3/18, Charisma 6/18
- Ability Score Adjustments: +2 Dexterity, +1 Constitution, -1 Strength, -1 Intelligence
- Class/Level Limits: Fighter 8, Druid 9, Thief 12, Bard 12, Fighter/Thief, Druid/Thief
- Thieving Skill Adjustments: -5% Pick Pockets, -5% Open Locks, -5% Find/Remove Traps, +5% Move Silently, +10% Hide in Shadows, +10% Detect Noise, +25% Climb Walls, -15% Read Languages
- SPECIAL ABILITIES: Ratatosk have very sharp senses, and have a +1 bonus to their surprise checks. They have a base ground movement rate of 9. However, they have a climbing movement rate of 12, and a flying (actually, gliding) rate of 15 with a D manoeuvrability rating. They may not climb or fly while wearing armour of any sort, so most rely solely on their high dexterity or magical protection. Their sharp claws, normally used for climbing, do 1d4 damage per hit. Their favourite attack is a swoop, however. They must be able to dive from a height of at least 20 feet to make this attack, causing double damage on a successful hit. However, they must also save vs. breath weapon or take the same amount of damage as their target. Ratatosk are very agile, and can twist and turn in midair to dodge missiles. If a ratatosk in flight rolls under her level on a d20, she may avoid a missile attack that would have hit. This applies to magical attacks that require a "to hit" roll as well, such as Melf's acid arrow or minute meteors, but not attacks that have no attack roll, such as magic missile.
- SPECIAL HINDRANCES: In spite of the fact that it isn't true, ratatosk are seen as giant rodents by most other sentient races. This gives them a -2 penalty on reaction rolls to all characters except those with an unusually open mind towards animals (such as rangers and druids). A ratatosk's health and well-being is tied into Yggdrasil or their other forest homes. Each day a ratatosk spends away from a forest, he must save vs. spell or suffer 2 hit points of damage. Returning to a forest will prevent these hit points from being lost, but only healing them normally or returning to Yggdrasil for a day will restore them. Ratatosk may be of any non-evil, non-lawful alignment (NG, CG, CN, or TN ).
- Druids of Yggdrasil: Ratatosk druids always worship and thusly draw power from Yggdrasil. As a result, they treat any plane touched by the World Ash as being an Adjacent Plane for the purposes of planar spell modification.
- The Mimir.net page contradicts itself, stating in its writeup that ratatosk have "+2 Dex/-1 Str/-1 Int", but in their Vital Statistics the modifications are given as listed above
- The Class Options in the writeup states that ratatosk can be "fighters, druids, or rogues (including bards on rare occasions)"... but the Level Limits entry states that they can only be fighters, clerics and thieves.
In the Midgard setting by Kobold Press, being it was inspired by Norse Mythology, ratatosk feature as a planar race of gossip-mongers, information brokers, travel guides and general nuisances. Debuting statwise in the Tome of Beasts for Dungeons & Dragons 5th Edition, a series of articles have been posted on the Kobold Press website that flesh out their racial lore, including providing a writeup of the original Ratatosk as a minor god.
- Ability Score Modifiers: +2 Dexterity, -2 Strength
- Speed: 25 feet, Climb 10
- Darkvision: 60 feet
- Grounded Celestial: You are vulnerable to effects that target either humanoids or celestials specifically.
- Sharp Tusks: When making an unarmed strike, you can choose to bite, inflicting 1 Piercing + 1d4 Psychic damage.
- Telepathic: You can communicate telepathically with any creature visible to you from a distance of (10 X your level) feet.
- Subrace: Choose either the Ekorre or Tradvakt subrace.
- Ability Score Increase: +1 Intelligence OR +1 Charisma
- Size: Tiny
- Blessing of Yggdrasil: You know the Message and Vicious Mockery cantrips. From 5th level, you can cast Mirror Image 1/day. All spells granted by this trait use Charisma as their spellcasting ability score.
- Diminutive Weapons: You can only wield weapons with the Light or Finesse properties normally. You have Disadvantage on attack rolls with any weapon that lacks these traits, and must use it two-handed. You cannot use a weapon with the Heavy trait.
- Ability Score Increase: +1 Constitution
- Size: Small
- War Chatter: As a bonus action, you can unleash a war chatter once per short rest. All non-ratatosks creatures within 30 feet must succeed on a Charisma save (DC 8 + your Proficiency bonus + your Constitution bonus) or have Disadvantage on attack rolls until the start of your next turn.