Now, I don't have much for Bren's chapter but I do have a few pieces, mainly of his power, that I hope you enjoy! I will try to tag everything I find but if I can't find the source, that doesn't mean I didn't look for it, it just means I couldn't find it. 

So, besides that, here is a little chapter about Bren Finke, Roux's childhood best friend and witch of the flame!

Source: http://gingers-and-redheads.tumblr.com/post/5096766841

This one probably resembles Bren the most to me, but then again, I haven't found much with a striking resemblance lol 

Source: https://www.cosmopolitan.com

Source: I could not find the source for this, sadly :(

This one could pass as Bren

Source: I could not find the source for this, sadly :(

This is a very close resemblance to Bren's facial features, just without the orange hair that his character is known for.

Source: I don't have the source for this, sadly :(

Now for the art! There isn't much that I've found but there are a few pieces that could somewhat resemble Bren. 

This one is a stretch for resemblance but in terms of facial features, I think it can be pretty close. 

Source: https://salizabeth.net/images/artwork/withoutaword_lger.jpg

Perhaps a younger version of Bren:

Source: http://ereya.deviantart.com/art/Kvothe-369724815

That's about all I have for Bren's facial features. Now it's time for his power and anything else that may be Bren related. (Basically, his power)

Source: https://www.google.com/search?q=Volcana&rlz=1CAACAC_enUS682US682&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj4v8mzravLAhUsl4MKHXJLB1sQ_AUIBygB&biw=1363&bih=704#tbm=isch&tbs=rimg:Ccc2Xfox0yqZIjgIqbZn2CwXTDo7Bd8pB2ucmNgmKr3zQgk8LUDqaSFGil0dOd-49oOsvySsz9ltoHQd73o3D7XlkSoSCQiptmfYLBdMEUVIQNUFl5uZKhIJOjsF3ykHa5wRvJoLMHOJMr4qEgmY2CYqvfNCCRERLJIrJQOoQSoSCTwtQOppIUaKERG2D3stahWbKhIJXR0537j2g6wRVhDiRuWmCmMqEgm_1JKzP2W2gdBHzZZRx2o1BbCoSCR3vejcPteWREfh4fusGDGzM&q=pyrokinesis%20gif&imgrc=AVGH_dxwafcyKM:

I really like this next one, it makes Bren's power look super strong!

Source: Although epic as it may be, I don't have the source for this :(

Source: N/A

That's all I have for Bren's chapter! I hope you enjoyed learning a little bit more about Roux's childhood best friend, one of her best supporters, and the person that understands her the most.