Quick guide on how to avoid looking at unlikable traveler faces.
Guide to Fix Better Looking Character
Open Character Screen
Login with the Character you wish not to see the face of and open gear/Character menu.
Open Head Slot
Select this option to open up gear for your headpiece/helmet slot.
Equip One That Looks Cool Enough?
Equip a piece that hides your mug?
Get to Loot Grinding for Better Gear
Get out there and play the game for more options.