Arsenasite (5e Race)

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You thought an Umber Hulk was scary...

Physical Description[edit]

Arsenasites are a race of Medium-sized insect-humanoids and are an 'Exotic' extant cousin of the more commonly known Thri-Keen. The arsenasites have largely been enslaved by less civilized races, such as Trolls, Ogres, Orcs, and sometimes Humans. This enslavement had largely been unquestioned for centuries due to the common belief that the arsenasites are just a subrace of Umber Hulk, but are in fact their own unique race. While having more in common with the Umber Hulk, arsenasites do not possess the large mandibles of their subterranean counterparts.


The history of the arsenasites has been lost largely due to their enslavement, but some stories passed down through the years tells of a world of ancient woods with trees as tall as the oceans are deep. It is unknown if this is actually the material plane or if these hulking insectoids originate from the fey wilds or possibly the beastlands.


Arsenasites that do escape their bondage and form groups large enough to make communities believe in freedom above all things. They work like insects striving to complete one goal, but their leadership is changed monthly, as the old leader will pass on his reign to another until the entire coven has led and the cycle repeats.

Arsenasite Names[edit]

Typically Arsenasites are not given true names, due to their enslavement, most have retained their slave names out of convenience. Though not truly gender specific, some often are associated either by a number, a code, or more intelligent and charismatic Arsenasites will create a name based on their environment and personality, rather than gender.

Example: B-12, 29935, Birch, Snowflake, Rage

Arsenasite Traits[edit]

Hulking insectoids slaves that have been mistaken for Umber Hulks for many years
Ability Score Increase. Your Strength score increases by 2 and your Constitution score increases by 1.
Age. Arsenasites can live for 120 years.
Alignment. Arsenasites are almost always chaotic in nature but have been known to span the moral spectrums of good, neutral and evil.
Size. They usually from around 6 to 7 feet tall. Your size is Medium.
Speed. Your base walking speed is 30 feet.
Darkvision. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.
Resistant Carapace. When unarmored, your Armor Class is equal to 11 + your Dexterity modifier. In addition, you may contract all of your muscles hardening your outer shell and granting yourself advantage on a Constitution saving throw of your choice. Once used you must complete a long or short rest to regain use of this trait.
Claws. You are proficient with your unarmed strikes, which deal 1d4 slashing damage on a hit.
Umber Hulk Resemblance. Although you generally resent your resemblance to the ferocious Umber Hulk, it does come with its advantages. You are proficient in the Intimidation skill.
Sensitive Antennae. Your antennae are exceptionally sensitive. Whenever you make a Wisdom (Perception) check related to smell, you are considered proficient in the Perception skill and add double your proficiency bonus to the check, instead of your normal proficiency bonus.
Languages. You can speak, read and write Common and Arsenese. Arsenese is an insectoid clicking language of your people that your people speak.

Random Height and Weight[edit]

6′ 2″ +1d12 250 lb. × (1d6) lb.

*Height = base height + height modifier
**Weight = base weight + (height modifier × weight modifier)

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