Rat Lab Roles Tier List

This Roles Tier List grades Rat Lab’s three teams — Lab Rats, Scientists, and Security — across four goals: fun, escape, PvP / lockdown, and science. Letter grades are guidance for public servers as of the active September 2026 patch window, not eternal law. Cross-check Updates after big changes, compare kits on the Tools tier list, and read full primers on the Teams Hub.

Ranking rules

• Grades assume average random teammates, not a five-stack voice call.
• Session tool unlocks reset each join, so grades assume you play the role long enough to reach typical mid-session tools.
• Vest knowledge matters: vest = +50 HP shifts rat survivability and Security trade math.
• Mutation Index colour literacy matters for Scientists — and those colours remain not promo codes (Codes).

Quick board

Role	Fun	Escape	PvP / Lockdown	Science
Lab Rats	S	S	B	C
Scientists	B	C	B	S
Security	A	C	S	B

Escape column for Security/Scientists means “how good the role is at personally completing a rat-style three-stage escape,” not “how good it is at stopping one.”

Lab Rats

Fun: S — Bite peels, vest clutches, and stage-three heartbeats are the fantasy most players clip.

Escape: S — The role is built for the three-stage escape. Rats who learn routes and skip ego revenge clear more often than rats who brawl every scientist.

PvP / Lockdown: B — You can win fights, especially with vest HP and bite timing, but dedicated Security kits (net, baton, taser, guns, sniper) exist to beat you in fair corridors.

Science: C — You are usually the subject, not the Index operator. Sabotage can slow science, yet you are not graded as a mutation specialist.

Playbook links: Lab Rats, Getting Started.

When Lab Rats drop a tier

• You refuse the vest and die to one baton cycle.
• You treat Mutation Index colours as codes and ignore real debuffs (Mutations).
• You rejoin expecting yesterday’s unlocks to persist.

Scientists

Fun: B — High if you like systems and tagging; lower if you wanted pure chase cam footage.

Escape: C — Not your native win path. A scientist “escaping” is usually flavour or a chaotic side story.

PvP / Lockdown: B — Mutation gun plus hazmat / armour can swing fights, especially with Security help, but raw capture tools still favour guards.

Science: S — Default best role for Mutation Index progress and lab control. Colour literacy is the skill ceiling.

Playbook links: Scientists, Scientist Guide, Mutations.

When Scientists drop a tier

• You block Security chokes and gift rats a free stage two.
• You never unlock hazmat / armour in contested sessions.
• You confuse the Mutation Codes pass or Index colours with free promo redeems.

Security

Fun: A — Extremely fun when nets land and stage-three holds clutch; less fun if you only snipe and miss.

Escape: C — You are the anti-escape role. Personal escape grading stays low by design.

PvP / Lockdown: S — Best capture toolkit in the game when session unlocks cooperate: net setups, baton confirms, tasers, guns, sniper angles, traps.

Science: B — You enable science by keeping subjects (or threats) managed, but you are not the Index lead.

Playbook links: Security, Security Guide.

When Security drops a tier

• Tunnel chase one rat while the pack finishes the escape elsewhere.
• Ignore vest math and overcommit into bite peels.
• Skip trap lines and play only deathmatch in the wrong room.

Goal-based recommendations

“I want the classic Rat Lab fantasy”

Pick Lab Rats (S fun / S escape). Learn routes before revenge. Watch the lab-rats video on the role page, then practice one clean clear.

“I want to win fights and control the map”

Pick Security (S PvP). Drill net → baton / taser. Study tool ranks on Tools.

“I want systems and mutations”

Pick Scientists (S science). Read colour rules before you spray the mutation gun.

“My stack wants mixed chaos”

Duo Security + Scientist for containment experiments, or duo Rats for coordinated stage pushes. Avoid three people all learning sniper angles on the same balcony.

Mutual links — keep learning

• Hub: Tier List Hub
• Tools: Tools tier list
• Roles: Lab Rats, Scientists, Security
• Guides: Guides Hub, Tools & Unlocks
• Meta shifts: Updates

Honesty corner

We will adjust letters when Evil Science changes capture strength, mutation timings, or escape steps. We will not sell you a fake “secret S-tier script role.” If someone ranks exploit ESP as gameplay, leave — see Scripts.

Pick the grade that matches your goal tonight, then put the hours into routes and confirms. That beats arguing about letters in chat while a rat finishes stage three behind you.