Killjoys ultimate ability, Lockdown, gives a movement debuff on all enemy players trapped inside of it for 8 seconds. It gives off a pulsating energy wave that will count down its detonation. ... This allows teammates to sweep up frags and wipe out enemies who played terrible positioning choices.
What does killjoy ULT do?
Killjoy's ultimate ability, “Lockdown,” does what it says on the tin. After a lengthy setup, the device captures all enemies caught within its radius for eight seconds. The device can be destroyed by enemies.
How long does a killjoy ULT last?
It takes 13 seconds for the ultimate to be completely active, and all enemy players remaining within the area will be detained at the end of this time. Enemies will have this brief period to get out of the radius or destroy the device before it takes effect.