An Accessory is a vanity item you can equip onto a class. You can equip different ones over the various loadouts the classes have.
Accessories 
Edit
Season 0 Edit
Captain Bracelet Edit
Requires 10 of any Volunteer skins.
Spartan Mask Edit
Requires 3 of any Veteran skins, and 1 of any Honored skin.
Christmas Hat Edit
Requires 1 Volunteer Whirlwind, Dirk, Stalker, Agent, Hydra, Judge, Scorpion, Shinobi, Destructor, Terminator, Prybar, Mongoose, Killmark, and Ghost.
Season 1 Edit
Adventure Hat Edit
Requires 8 of any Jungle skins.
Bunny Slippers Edit
Requires 5 of any Tiger skins.
Sheep Hood Edit
Requires 5 of any Tiger skins.
Horizon Chase Slippers Edit
Requires 3 of any Sunrise skins.
Pirate Set Edit
Requires 2 of any Overkill skins, and 1 Diamond Ore Buzzsaw, Maelstrom, Widower, Piledriver, Persuader, Machete, Hurricane, Constrictor, Oni, Serpent, Brute, Mammoth, Haunter, and Redeemer.
Season 2 Edit
Cat Backpack Edit
Requires 7 of any Tiger skins, and 7 of any White Tiger skins.
Samurai Helmet Edit
Requires 2 of any Seaquake skins, and 1 Urban Cobra, Spectre, Slayer, Gremlin, Curator, Demon, Devil, Shinobi, Hammer, Heavy Metal, Commando, Ranger, Warden, and Drone.
Frog Slippers Edit
Requires 20 of any Jungle skins.
Paw Shoes Edit
Requires 10 of any Urban skins, and 2 of any Rose skins.
Season 3 Edit
Viking Helmet Edit
Requires 10 of any Desert Skins, and 2 of any Forge skins.
Cuirassier Helmet Edit
Requires 20 of any Hearts skins, and 1 Blue Flame skin.
Magma Mask Edit
Requires 8 of any Magma skins.
Burning Feet Edit
Requires 2 of any Red Flame skins, and 1 Forge skin.
Core Edit
Gentleman Set Edit
Requires 10 of any Gridline skins, and 10 of any Circuit skins.
Greydeath Mask Edit
Requires 2 of any Greydeath skins, and 1 Gridline Thumper, Tormentor, Executioner, Switchblade, Twister, Firebrand, Tornado, Blister, Sawblade, Rhino, Rampart, Blackhawk, Intruder, and Redemptor.
Missions Edit
Halloween Edit
Pumpkin Head Edit
Requires 6 of any Pumpkin skins.
Unreleased Accessories Edit
Automata Mask Edit
Added to the game with the rest of the Season 2 accessories, this appears to be a mask similar in design to Tank Elite's mask, but having the color scheme of Automata: yellow-orange, white, and black. This has no accessory icon at present.
