Suicidal Jackal

The Suicidal Jackal is a glitched Jackal found in Halo 2 ' s Campaign level, Outskirts. The glitch causes an enemy Jackal Sniper to mysteriously drop dead.

Walkthrough
To see the affected Jackal, play through the level normally, but when you are past the alleyway, otherwise known as "Sniper alley", with the Drones, proceed to the next alley, go through a bit and stop, turn left and you should see a Jackal Sniper. Do not kill him. Go trigger a checkpoint. Go back to the Jackal, and you should see him fall over and die by himself. It only works when you are both aware of each others' presence.

Also, randomly, you can see a Jackal Sniper kill himself on Regret level. This Jackal Sniper will appear where the turrets are, right after the gondola. The Jackal will run, drift, and fall to the lake.