Outfits and Headgear are cosmetic only items. You can select 1 out of 4 outfits at the character creation screen. You can obtain outfits by completing some Pursuits, some Missions or purchase them from the game store.
Outfits are the entire appearance from the neck down and Headgear is the head only.
41st Century Agent
Headgear
Part of the 41st Century Agent Costume Pack released October 2015.
Transferred if owned in Defiance Classic
7th Legion Samurai
Headgear
Transferred if owned in Defiance Classic
Abominable Warmaster
Headgear
Abominable Warmaster Pack during Solstice Strike
Transferred if owned in Defiance Classic
Acolyte of the Guiding Light
Headgear
Transferred if owned in Defiance Classic
Antlers
Headgear
Solstice Strike Arkfalls during the Christmas Event 2014 or Radiant Solstice Supply Crate
APS Dispatcher
Headgear
Defiance Store: Special Delivery Lockbox
Transferred if owned in Defiance Classic
Ark Alliance Terranaut
Headgear
Powertech Lock Box from the Defiance Store
Badlands Crime Lord
Headgear
Transferred if owned in Defiance Classic
Biohazard Battler
Headgear
Chance from Biohazard Lock Box from the Defiance Store.
Biohazard Explorer Helmet
Headgear
Chance from Biohazard Lock Box from the Defiance Store.
Biohazard Trooper Helmet
Headgear
Transferred if owned in Defiance Classic
Black Hat
Headgear
Von Bach Gunslinger Cache from VBI faction vendor after completing the Gunslinger DLC missions.
Buckled Capotain
Headgear
Carapace Red Hellbugs Cap
Headgear
Transferred if owned in Defiance Classic
Stratotech Defiance 2050 [Source]
3PL9 WDFG DKPR 9LE7 P7Y7 [Redeem]