Once Human: the complete 2026 Anomalies guide

In Once Human, Deviants (also called Anomalies in the technical menus) are much more than mere curiosities: they're the companions that make the difference between painfully surviving Chaosstellium and dominating a season. Combat, passive farming, crafting, Sanity management: each Deviant fills a specific niche, and the 2026 meta after the Anomaly: Survive, Capture, Preserve update has shuffled the deck. This guide sorts it all out: which Deviants to capture first, where to find them, how to manage their mood in an isolated Securement Unit, and which newcomers deserve your time.

What is a Deviant in Once Human?

A Deviant is an entity born of Chaosstellium that has mutated on contact with Stardust. In concrete terms, these are creatures or living objects that your character (a Meta-Human) can tame and then put to use. Each Deviant belongs to one of the game's four official categories:

• Combat: they accompany you on missions and deal damage, tank, or heal.
• Territory: placed at your base, they automatically farm wood, ore, food, or boost production.
• Crafting: they craft consumables such as universal repair kits.
• Gadget: one-off utility effects (teleportation, jumps, exploration).

The big catch is that a Deviant can't simply sit in your inventory: it consumes Deviant power and its Mood fluctuates depending on its environment. A mistreated Deviant falls into depression and simply stops functioning. So you need to think carefully not only about who to capture, but also about how to house them.

How to capture a Deviant: Deviants, silos, and Secure the Item missions

There are five ways to obtain a Deviant in Once Human, each suited to a different level and type of creature:

1. Open-world capture: many Deviants spawn near their preferred biome. Just use a Deviant Trap after weakening the target.
2. "Secure the Item" missions: these dynamic events flagged on the map require you to defend a capsule against waves of enemies. The reward: a guaranteed Deviant.
3. Securement Silos: instanced dungeons that drop the best Deviants in the meta. Silo Alpha, Theta, PSI, and EX1 are the most rewarding in 2026.
4. Deviant Zones and Monoliths: these hostile sites hide unique bosses whose loot tables contain exclusive Deviants, such as the Ravenous Hunter at the Monolith of Greed, in the Dayton Marshes.
5. Lowe's side quests and season rewards: the NPC Lowe unlocks unique Deviants through his "Deviant Expert" quest chain, and certain seasons offer exclusive Deviants like the Zeno Purifier.

Tip: always keep a few Starchrom (the Battle Pass's premium currency) and Chaosprisms in reserve. Some Deviants can be bought or unlocked with these currencies when drop RNG turns cruel.

The Isolated Securement Unit and the Mood system

Once caught, an Anomaly must live in an Isolated Securement Unit placed in your territory. This is the key piece of equipment in the whole system. Each Anomaly has a preferred environment: type of music, lighting color, decoration, presence of a specific item. Sticking to these preferences raises Mood faster and allows the Anomaly to stay active longer.

The mechanics are simple:

• The Anomaly's power is consumed with each activation or passive action.
• When it's empty, the Anomaly draws on its Mood to keep going.
• When Mood hits zero, it pauses until fully regenerated.

For a combat Anomaly, you also need to sync it to your Cradle via the management interface to bring it to the front. Territory and crafting Anomalies, on the other hand, work on their own as soon as they're locked in a properly decorated Unit.

2026 Combat Tier List: the Anomalies winning silos

The 2026 combat meta is dominated by a handful of essential Anomalies. Here's the ranking as it stands from community testing after the Survive, Capture, Preserve update:

For a solo player, the Festering Gel + Butterfly's Emissary duo covers pretty much every PvE scenario: a regenerating shield on defense, a passive damage multiplier on weak points on offense. Co-op compositions tend to revolve more around Lonewolf's Whisper, which remains the best aggro generator while also boosting the group's weapon damage.

Farm and Territory Tier List: automate your base

The second strength of Anomalies is passive farming. Placed well in your territory, they fill your coffers while you play something else. Here are the must-haves:

The winning combo for a self-sufficient base: The Digby Boy + Logging Beaver + Chefosaurus Rex. Together, they cover ore, wood, and cooked food, completely freeing you from base farming and letting you focus on silos and world events.

Crafting and Utility Tier List: the clever ones

Less glamorous but essential in the long run, crafting and gadget Anomalies save a huge amount of time:

• Artisan's Touch — Absolute S-tier for crafting. It automatically produces Universal Repair Kits that repair your weapons and armor without needing a workbench. Drops from the Scorcher, a fiery boss fairly easy to farm in a group.
• Frog the Leaper — Utility gadget, drastically increases jump height. Impressive for vertical exploration and dodging certain ground attacks.
• Electric Eel — Becomes formidable in a well-equipped endgame territory: it releases pulses that recharge your electronic gear.
• Lethal Rabbit — Small animal-material farmer, lightweight but reliable for leather crafting.
• Rebecca — Versatile utility, heals wounds and provides reliable support during exploration.

If you can only keep one from this list, pick Artisan's Touch: equipment repair is a resource sink, and this Anomaly alone pays for your inventory many times over.

The new Anomalies from the Survive, Capture, Preserve season

The 2026 update Anomaly: Survive, Capture, Preserve introduced four new Anomalies, all obtained from advanced containment silos. They shake up the meta without breaking it:

• Whalepup — A-tier Combat. Creates an aquatic battlefield that traps enemies in currents. Clear the Theta Containment Silo.
• Soul Summoner — A-tier Combat. Summons a spectral fire bird that deals massive area damage. Obtained by defeating the final boss of the EX1 Silo.
• Director Fox — A-tier Territory. Increases animal taming and offspring production on your farm. Final boss of the PSI Silo.
• Zapamander — B/A-tier Combat. Electric salamander that chains lightning between nearby enemies.

The Whalepup and the Soul Summoner are particularly interesting for players looking to refresh their build after six months of the Envoy Butterfly meta. Director Fox, meanwhile, is aimed at players investing in an ambitious animal farm.

How to maximize the effects of a Deviant

Capturing a good Deviant is only half the work. Here are the concrete levers to get the best out of each one:

1. Decorate its Isolated Containment Unit: each Deviant has a "preferred environment" sheet you can check in the interface. An Envoy Butterfly likes floral decorations and warm lighting; a Purulent Jelly prefers humidity and dim lighting. Respecting these preferences nearly doubles its useful activity time.
2. Suitable music: the territory jukebox affects Mood. A soothing track raises the Sanity of several Deviants at once.
3. Save a Deviant's power for key moments: activating a combat Deviant is costly. Save the Whisper of the Loner for boss phases, not for trash mobs.
4. Consume Mood to restore power: at the worst moment, sacrifice Mood to extend a critical effect. You'll pay the price later.
5. Rotate two Deviants of the same type: in difficult silos, having a resting Purulent Jelly and an active Envoy Butterfly avoids a power gap when strength drops.

Mistakes to absolutely avoid

Three classic pitfalls hold back players' progress:

• Cramming too many Deviants into the same unit: Isolated Containment Units only hold one Deviant at a time. Multiply your containers, they're the cheapest bricks in your base.
• Neglecting your character's Sanity: the lower your Sanity drops, the less effective your Deviants become. Cook +Sanity dishes and avoid lingering too long in areas heavily contaminated by Stardust.
• Forgetting to resynchronize after a Cradle change: every Cradle update requires you to re-link your combat Deviants. Forget this and you'll head into a silo without a companion.

Our recommended starting trio for the 2026 season

If you're starting out or coming back mid-season, aim for this stack of three Deviants before anything else:

1. Purulent Jelly — PvE and solo safety.
2. Little Digby — Passive ore farming that unlocks all endgame crafting.
3. Artisan's Touch — Resource savings on repairs.

This trio covers you in combat, economy, and logistics. Once set up, you can aim for the S+ combat picks (Envoy Butterfly, Whisper of the Loner) and then the new additions from the Survive, Capture, Preserve season.

In summary

Anomalies are the quiet core of Once Human, the thing that separates an average survivor from a fearsome Meta-Human. The 2026 meta favors hybrid builds: a defensive Anomaly like Putrid Gel, a passive multiplier like the Envoy Butterfly, and a farming machine like Little Digby. Add good Sanity management through well-decorated Isolated Security Units, and you'll turn every silo run into a profitable session. Happy farming, and watch out for deep Anomalies.