From SCP: Secret Laboratory Public Beta Official Wiki

Appearance F1 Menu Art

173Shield.png Reinforced Concrete (Passive)
Slight Bullet Resistance.
High penetration weapons deal more damage than
low penetration weapons.

173Shit.png Tantrum (Active)
SCP-173 leaves a pool of filth on the ground that slows people down.
Restores small amounts of Hume Shield if SCP-173 kills people who are currently stained by filth.

173Blink.png Blink (Active)
Teleport to a marker on the ground, forcing everyone to blink.
Will kill the nearest human if they are in range.

173Breakneck.png Break Neck Speeds (Active)
SCP-173 moves a lot faster and can blink further, but is unable to kill.

CATSTATUS.png Health: 3000
CATSHIELD.png Hume Shield: 1500
CATSPRINT.png Speed:
Normal: 7.5 m/s 

10 hubes

Break Neck: 12.8 m/s 

17 hubes

Other Information
Spawn Location: Light Containment Zone
Weakness: Can't move when looked at, Micro H.I.D.
Nickname: Matthew
Class ID 0

SCP-173 is one of the seven playable SCP classes in SCP: Secret Laboratory.
SCP-173 is a sculpture that is able to move at high speeds, but when looked at, will come to a complete stop.
SCP-173 acts as an assassin class SCP, meant to quickly hunt down and eliminate a single target or small groups.

In Game[edit]

SCP-173 will spawn in its containment cell in Light Containment Zone. SCP-173 can't leave his cell right away as it is locked, to allow Class-D and Scientist some time to explore. After a short amount of time SCP-173 can leave his cell to begin killing humans in and around LCZ. SCP-173 can be controlled with WASD to move, and Spacebar to jump, though 173's jump height is very low.

When SCP-173 isn't being observed, they can press Left Click.png Left Click to snap player's necks. Once looked at, SCP-173 stops moving but starts charging their Blink ability. This takes three seconds. Once finished charging, the player can hold Right Click.png Right Click to mark a location. When the player releases Right Click.png Right Click, SCP-173 will teleport to their mark by forcing humans to blink, killing the nearest human if they are in range.

The countdown for when SCP-173 can blink is shown in the center of SCP-173's screen over a symbol of an eye. If SCP-173 loses all witnesses while charging Blink, the countdown disappears and the eye symbol turns red, shrinking over three seconds. During that time, SCP-173 can move normally, but if a player looks at SCP-173, SCP-173 can blink immediately.

Breakneck Speeds can be turned on by pressing Shift. In this state, SCP-173 moves a lot faster and can blink 1.5x further, but is unable to kill players. This is useful to escape a sticky situation or move around the map quickly. However, it ends automatically 10 seconds after SCP-173 is spotted. This mode also ends when the player presses Shift again, though the player must wait at least 1.5 seconds after initial activation. This acts as a failsafe so players don't accidentally turn the ability off as soon as they use it. The ability has a 40 second cooldown.

Pressing the F key will make SCP-173 leave filth on the ground. Players entering the filth gain the Stained Effect, which reduces movement speed by 20% and makes players unable to sprint. Even after leaving the filth, the Stained effect will last for two seconds before going away. If SCP-173 kills someone while they are Stained, they will gain 100 Hume Shield. Tesla Gates will destroy nearby filth.

SCP-173 has bullet resistance similar to SCP-106, but unlike SCP-106, the bullet resistance isn't as high and the damage taken is based on the penetration of the weapon. Weapons with lower penetration will deal less damage than weapons with higher penetration. SCP-173 has an armor value of 60%, which is equal to Combat Armor.

SCP-173 can talk to the other SCPs by holding down the Q key. This voice chat can be heard by all SCPs no matter the distance.

At Tier 2, SCP-079 can Blackout a room for 60 AP, allowing SCP-173 to freely move. This can be countered with the Flashlights such as the item or attachment or by using the Night Vision attachment.

Strengths and Weaknesses[edit]


  • Instantly Kills.
  • The Breakneck Speeds ability makes it easy to escape large armed groups.
  • Tantrum ability is useful for ambushing as it slows humans down and makes them unable to sprint.
    • Players who have the "Stained" effect from Tantrum will restore 100 Hume Shield when killed by SCP-173.
  • Combos incredibly well with other SCPs, especially 079 and 096.


  • Stops movement immediately upon being looked at.
  • An incredibly easy target to armed forces, as it is completely immobile whilst being viewed.
  • Incredibly vulnerable to the Micro-HID.
  • Can be trapped in lockable rooms.
  • The more players looking at SCP-173, the longer the Blink ability has to be charged up.

Related Achievements[edit]

Dying to SCP-173 grants the Is this your first time? achievement.


Sight Stingers
Chase Ambient
Attack Sounds
Ability SFX



  • SCP-173 doesn't have a ragdoll upon death, instead falling apart into pieces when killed.