⚠️ Steal An Egg players are down -27% over 36h. When a game loses players, item values often fall too.
Nuclear Mantis is this banner's pity pet. A full pity bar (100 pulls in most guides) always gives it.
Takes eggs from Prehistoric, Cosmic, Cherry Blossom. Hand them in directly, no hatching needed.
No changes since we started tracking on Sep 29, 2026. When Steal An Egg buffs or nerfs Nuclear Mantis, it shows up here.
Nuclear Mantis is one of the best rewards to come out of Dr. Scramble's Laboratory, the crafting system where you trade in eggs for a chance at a banner's top pets.
Our own data ties it to the Biohazard banner, alongside pets like the toxic, prehistoric-themed animals that banner is known for.
It pairs well with 
Dreadstinger as one of the two headline Eternal pulls from the Laboratory, so grinding either banner is a reasonable way to chase a strong Eternal pet.
Trade in Biohazard Eggs at Dr. Scramble's Laboratory for a chance at Nuclear Mantis.
The Laboratory is a rotating banner system, so confirm the Biohazard banner is active before farming eggs for it.Farm drone invasions for Samples, then spend them on Biohazard Eggs to trade in at the Laboratory.
GrindingCheck which Laboratory banner is active before stockpiling eggs for Nuclear Mantis.
Treat a Dreadstinger pull from the same general Laboratory grind as a solid consolation prize.
Its name and radioactive green coloring tie it to the Biohazard themed egg pool.
The Laboratory's Biohazard Egg also produces other prehistoric-styled pets at lower rarities.
Related: Dreadstinger
Toxic Hedgehog
Checked 2026-09-29 against 2 sources and written in our own words. Numbers follow the official update notes first, then the wiki, then players.
Dreadstinger under a single Experimental banner. We keep the Biohazard banner label used in our own data.Steal An Egg Wiki: Nuclear Mantis is licensed CC BY-SA 3.0. Game content and images belong to the game's developer. We are not affiliated with Roblox or the developer.
Nuclear Mantis has a base income of 1.5B/s, which ranks it #23 of 194 in Steal An Egg. Silver 1.2x: 1.8B/s, Bloom 1.25x: 1.88B/s.
Nuclear Mantis is a Eternal pet, tier 9 of 11.
By base income, yes: Luminous Electric Eel is 1.75B/s, about 1.2 times Nuclear Mantis's 1.5B/s.
Dr. Scramble's Laboratory, Biohazard banner: Trade in Biohazard Eggs at Dr. Scramble's Laboratory for a chance at Nuclear Mantis.
Strengths: One of the top two Eternal rewards from the Laboratory system. Strong steady income that holds up well later in the game. Farming the Biohazard Egg pool also turns up other themed pets along the way. Weaknesses: Sources disagree on which Laboratory banner actually drops it, which makes farming plans confusing. Banner availability rotates, so it will not always be up.
Trade Biohazard Eggs into Dr. Scramble's Laboratory. Nuclear Mantis is one of that banner's top rewards.
Yes, it is one of the strongest Eternal pets available from the Laboratory's trade-in system.
Community data from the Steal An Egg Fandom wiki and several fan sites, which disagree on a few pets (noted on their pages). Four Extinction Egg animals (Terrorbird, Giant Sloth, Dunkleosteus, Gigantus) will be added once their base income is published; their Skeletal versions are listed.
NuceodileSecret · 500M/s
ToucaxCosmic · 30M/s
RadcoonCosmic · 2.2M/s
Toxic RatMythic · 180K/s