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By GamGem ResearchLast updated 3 Sept 2026 · 00:00

Act 5 · Patch 13.05

Killjoy

Sentinel · Post-plant lockdown

Sentinels are defensive experts who can lock down areas and watch flanks, both on attacker and defender rounds.

Why we fit it where we do Compact sites let one prepared setup cover the plant and the flank together.

The four

  • NanoswarmC · damage

    EQUIP a Nanoswarm grenade. FIRE to throw the grenade. Upon landing, the Nanoswarm goes covert. ALT FIRE to lob. ACTIVATE the Nanoswarm to deploy a damaging swarm of nanobots.

  • ALARMBOTQ · trap

    EQUIP a covert Alarmbot. FIRE to deploy a bot that hunts down enemies that get in range. After reaching its target, the bot explodes and applies Vulnerable to enemies in the area. HOLD EQUIP to recall a deployed bot.

  • TURRETE · trap

    EQUIP a Turret. FIRE to deploy a turret that fires at enemies in a 100 degree cone. While targeting, EQUIP again to swap turret direction, HOLD ALT FIRE to rotate. HOLD EQUIP to recall the deployed turret.

  • LockdownX · trap

    EQUIP the Lockdown device. FIRE to deploy the device. After a long windup, the device Detains all enemies caught in the radius. The device can be destroyed by enemies.

What it asks of you

  • AimLow
  • MapMedium
  • TimingLow
  • TeamLow

Rehearsal Custom practice · Place the swarm on the default plant and check it from the defuse angle.

Watch out Utility deactivates out of range — leaving the site disarms your own setup.

Buying for it

Priority
Nanoswarm before armour on a save
First utility
Swarm on the plant spot
Position
On the site, inside your own range
The mistake
Rotating away and leaving the setup dead

Patch 13.05

Nothing in patch 13.05 names this agent. Your habits carry over — the retest list on the patch page is short and this is not on it.

Killjoy on video

Situations this kit fills

  • Haven C · DelayC Link → C Long
  • Ascent A · Deny plantA Tree → A Site
  • Ascent B · DelayB Lobby → B Main
  • Sunset A · Deny plantA Elbow → A Site
  • Lotus A · DelayA Link → A Main
  • Lotus B · Deny plantB Upper → B Site
  • Open the whole library

Other Sentinels

What this page will not print

  • Pick rate
  • Win rate
  • Tier

Riot publishes no public match statistics and this product holds no sample of its own. What replaces them is on this page already: what the kit does, what it asks of you, and which situations it can fill.