Foul Manifestation

Foul Manifestation rare is located in The Heaps Mechagon.
Part of the Rest In Pistons achievement

Rare should spawn in the water. To activate this rare you have to

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• use [object=322796] device at 67.56 55.53
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• connect 3 pylons
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For TomTom users:
/way 67.56 55.53 Use Circuit Breaker to activate
/way 66.02 51.50 Foul Manifestation

How to summon video: https://youtu.be/oqoy6Tg-PC8
Kill video: https://www.youtube.com/watch?v=VmNyJijcOl4

the pools are perpetually on on my realm - no breaker even appears...haven't seen one shout out for this rare and have been here for 2 days

This NPC is part of the Mechagon's Rest in Pistons achievement.

Mechagonian Nullifier - 56.88 52.10 (Junkwatt Depot: Requires Smashed Transport Relay, which has a small drop rate from minions that spawn for 1 minute during Gemicide's Drill Rig DR-JD99 drilling.
Mecharantula -- 87.90 19.60 (Sparkweaver Point)
Paol Pondwader -- 22.02 69.17 (Roams the north side of the second-most big isles in Western Spray. Only seems to spawn when Reclamation project and/or Flame Turret projects are available)
Arachnoid Harvester -- 51.69 41.57 (southwest of Bondo's Yard)
Fungarian Furor -- Only spawns when Mylune is in Rustbolt with daily quest: Aid from Nordrassil. Follow the link to learn how to summon him.
Deepwater Maw -- 37.28 43.82 (Toothy Shallows: Requires Hundred Fathom Lure to spawn)
Bonepicker 65.90 26.94 (Sourback Hideout cave)
Uncle T'Rog - 58.65 23.58
Motobrain Spider -- 80.14 24.84 (Sparkweaver Point: patrols north to south of the coordinates, near the cave)
Malfunctioning Beastbot -- 60.66 42.22 (Bondo's Yard: Spawns as a neutral giant mech-gorilla. Requires: Beastbot Powerpack to turn him on. First timer? Blueprint: Beastbot Powerpack at 60.93 41.57)
Earthbreaker Gulroc -- 63.03 25.68 (Only spawns when Drill Rig construction projects are available. Drill Rig DR-TR35. Scrapbone's Hollow cave in Scrapbone Den)
Gemicide -- 59.78 67.05 (Requires: Drill Rig costruction project. Cave, south of Junkwatt Depot's wall)
Boilburn -- (a cave north of the Junkwatt Depot's wall. Only spawns when Drill Rig construction projects are available. Drill Rig DR-JD41. Drops Blueprint: Scrap Trap)
Steel Singer Freza -- 25.29 77.55 (Western Spray)
Mr. Fixthis - 61.25 60.49 (Junkwatt Depot)
Oxidized Leachbeast
The Rusty Prince - 57.21 58.38 (Future Mechagon: Junkwatt Depot)
Caustic Mechaslime -- 66.46 58.81 (The Outflow: Only spawns when Drill Rig construction projects are available. Drill Rig DR-CC73. Inside the Crumbling Cavern)
The Scrap King -- 72.27 50.12 (The Heaps)
Jawbreaker -- 77.26 44.68 (The Heaps)
Rumblerocks -- 38.21 53.02 (Inside the Rustrock Cavern in Toothy Shallows)
Killsaw -- 41.26 34.88 (The Fleeting Forest)
Foul Manifestation - 66.11 50.10 (The Heaps: follow the link to learn how to summon him.)
Rocket
Boggac Skullbash -- 55.64 26.37 (Scrapbone Den: only spawns during Drill Rig construction projects)
Seaspit -- 19.25 80.26 (Western Spray: drops Blueprint: Rustbolt Kegerator)
Rustfeather -- 64.13 78.86 (The Outflow: top of mountain)
Crazed Trogg -- 81.94 21.35 -- (Tinted Cave in Sparkweaver Point. He is friendly. Follow the link to learn how to turn him hostile)
Ol' Big Tusk -- 56.22 35.92 (Requires Drill Rig construction project. Drill Rig DR-TR28)
Oxidized Leachbeast
The Kleptoboss -- 68.39 48.27 (The Heaps: only spawns when Drill Rig construction projects are available. Drill Rig DR-CC88. Inside the underground Crumbling Cavern)
Gear Checker Cogstar (Only spawns when a certain amount of Upgraded Sentry are killed. They say "Bzzt... unit defeated... request immediate support... Szzt. Cogstar yells: Distress message received! Gear Checker Cogstar reinforcing target area." He spawns where that last Upgraded Sentry died)
Armored Vaultbot -- 50.08 46.46 (The Fleeting Forest: roams northwest to southeast of these coordinates. He is immune. Follow the link to learn how to kill him. Drops: Blueprint: Armored Vaultbot Key)
Enforcer KX-T57 - 52.98 62.38 (Junkwatt Depot)
Gorged Gear-Cruncher -- 72.85 54.06 (The Heaps: Only spawns when Drill Rig construction projects are available. Drill Rig DR-CC61. Inside the Crumbling Cavern)