Fawkes' Axis of Anarchy Shirt
Fawkes wears this t-shirt (along with a kilt) in the season 03 opener of The Guild. We believe this shirt was originally manufactured and distributed by the clothing company J!NX. Unfortunately, as is often the case with J!NX stuff, the shirt has been seemingly retired.
The good news is that a designer decided to make a replica and sell it on redbubble.
Check it out →