Although /fur/ claims to be the older board, /furry/ became more popular in the wake of the halfchan Exodus in 2014. Their board-tan was N8, who has since been more or less adopted by /fur/, following a spambot attack that effectively killed the board.
N8 is a creature of undetermined origin, who seems to comprise elements of raccoons, foxes and red pandas depending on the artist. His fur is mostly red, but his chest and belly areas are white. All his paws and the tips of his ears are also a darker shade of red, and there are rings around his tail in this same shade (the number of rings can differ between artworks, but generally seems to be 2). On his face N8 has a facial marking in this darker red shade as well, around his eyes in the shape of a domino mask, a reference to the 8chan logo (possibly the older red one).
N8 is everything people hate about furries. He's gone off the deep end and is an openly proud degenerate. He's also gay and a sexual bully, who enjoys talking or manipulating people into doing things they don't want to do in the bedroom. His most common victim is Bushy, but whether or not there are deeper motivations from N8's side is a matter of debate.
Originally, N8 was supposed to be a furry equivalent of Anon, able to take any form and position as required by circumstances. Later on he got locked into his "little boy" form, and some versions got made into their own characters. F8 (also called F8 Str8 by full name) is an adult female version of N8 who later got reworked as his mother. She's said to be the good virtuous one as an antithesis to N8, a single mother trying to raise her children as best she can after her unknown ex knocked her up and walked out on the family. There's also K8, N8's little sister, who looks just like N8 except for a ribbon in her hair and longer eyelashes. No characterisation is set for her.