That biker must've been from one of the devil-worshipping motorcycle clubs, because this bandana is printed with Hell's angles.
(In-game plural: pentagram bandanas)
|TOP 10 pentagram bandana collections|
6. arbalaragan - 204 | 7. Nikademus - 162 | 8. testostronaut - 157 | 9. tbell30 - 152 | 10. MrSpeed - 140
Collection data courtesy of ePeterso2 and Jicken Wings