Phantom Heavies are a group that appear in the  . They are modified versions of the Sonic the Hedgehog series Hard Boiled Heavies.
, when Sonic Mania Sonic, Tails and Knuckles got to the Titanic Monarch Zone, four of the Hard Boiled Heavies-turned-Phantom Heavies ( Phantom Gunner, Phantom Shinobi, Phantom Magician and Phantom Rider) took on the trio when Eggman sent them to their respective arenas using his Phantom Egg. Despite each of them getting a turn though, none of the Phantom Heavies were able to stop Sonic and co.
Upon reaching the
Egg Reverie Zone, the Phantom King tried to steal the Phantom Ruby for himself, prompting Eggman to battle the Phantom King using his Klepto Mobile in an attempt to take the ruby back. Sonic, having all seven of the Chaos Emeralds, transformed into Super Sonic and defeated both of the power-hungry monarchs however.
Sonic Mania Plus
, after the battle in the Sonic Mania Plus Titanic Monarch Zone, the Phantom Heavies somehow got destroyed (except for the Phantom Magician), their remains ending up in Angel Island Zone; the Heavy King and Heavy Magician even reverted back to their base forms. When Sonic later resurfaced with the Phantom Ruby however, the Heavy Magician stole the Phantom Ruby and took it to the remains of its teammates, where she gave it to the Heavy King, who used it to revive the rest of the Phantom Heavies as the Hard Boiled Heavies and teleport them to Green Hill Zone.
The Hard Boiled Heavies later turned back into the Phantom Heavies, with the exception of the Heavy King. These individuals fought Sonic and company when Eggman sent them to their respective arenas using his
Phantom Egg. Despite each of them getting a turn though, none of the Phantom Heavies were able to stop Sonic and co.
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Dr. Eggman | Hard Boiled Heavies ( Heavy King, Heavy Gunner, Heavy Shinobi, Heavy Magician, Heavy Rider) | Phantom Heavies ( Phantom King, Phantom Gunner, Phantom Shinobi, Phantom Magician, Phantom Rider) | Metal Sonic ( Giga Metal) | Animals ( Becky, Cucky, Flicky, Locky, Micky, Pecky, Picky, Pocky, Ricky, Rocky, Tocky, Wocky) | Jimmy
Zones Angel Island Zone* | Green Hill Zone | Chemical Plant Zone | Studiopolis Zone | Flying Battery Zone | Press Garden Zone | Stardust Speedway Zone | Hydrocity Zone | Mirage Saloon Zone | Oil Ocean Zone | Lava Reef Zone | Metallic Madness Zone | Titanic Monarch Zone | Egg Reverie Zone | Special Stage | Bonus Stage | Pinball Stage*
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DD Wrecker | Amoeba Droid | Heavy Gunner | Big Squeeze | Shiversaw | Hotaru Hi-Watt | Dive Eggman | Uber Caterkiller | Meter Droid | Drillerdroid | Egg Pistons mk.II | Crimson Eye
Death Egg Robot | Mean Bean Machine | Weather Globe | Spider Mobile | Heavy Shinobi | Metal Sonic | Laundro-Mobile | Heavy Magician | Mega Octus | Heavy Rider | Heavy King | Gachapandora | Phantom Egg | Phantom King and Klepto Mobile
Air Glide* | Bounce Jump | Climb | Crouch | Double Jump | Drop Dash | Fireball Spin Dash | Glide | Hammer Drop* | Insta-Shield | Propeller Flying | Ring Spark Field | Spin Attack | Spin Dash | Spin Jump | Super Peel Out | V. Maximum Overdrive Attack
Gimmicks and obstacles
Beanstalk | Bomb | Bumper | Bungee Rope | Bumper wall | Capsule | Conveyor Belt | Crusher | Dash Panel | Electrical conduit | Fan | Fireball Cannon | Flipper | Flywheel | Goal Plate | High-speed warp tube | Ice Spring | Iron ball | Jump Panel | Platform-raising Wheel | Pulley | Ruby Mist | Seesaw | Size Beam | Snowblower | Spikes | Spring | Star Post | Switch | Transport | Vine | Zip Line
Air Bubble | Chaos Emerald | Giant Ring | Giant spear | Item Box ( 1-UP, Blue Shield, Bubble Shield, Character*, Hyper Ring, Eggman Mark, Fire Shield, Invincible, Lightning Shield, Player Swap, Power Sneakers, Random, S, Super Ring) | Little Planet flowers | Master Emerald | Metal Sonic Projector | Medallion | Ring | Robot transporter | Schrodinger's Capsule* | Sphere | Star Circle | Time Warp sign | UFO | Warp Point
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Angel Island | Auto Running | Continue | Death Egg Robot | Debug Mode | Egg Mobile | Freeze | Hang Glider | Klepto Mobile | Level Select | Little Planet | Mega Mack | Perfect Bonus | Phantom Ruby | Rock Drill | Shuttle loop | ( Sonic Mania Adventures Sonic Returns, Sonic and Tails, & Knuckles, Mighty and Ray, Metal Mayhem, From: A. Rose, The Complete Mini-Series) | Time Attack | Time Over | Time Warp | Tornado | Winding Tunnel
Sonic Mania Plus only