Chelsie Warner
Species: Sheep
Gender: Male
Religion: Church of the Shepard

Chelsie is a small sheep boy who was left behind in the movie theater by his parents in #41. After discovering that her entire family had suddenly perished (in three apparent coincidences), Artie took him home for the night. The exact details are unknown, but the two of them then apparently had sexual intercourse, and thus Artie learned of Chelsie's true gender (they had assumed the child was a girl, what with the dress and the name Chelsie, and everything). They then left him in the care of Tim, the priest of the church Chelsie regularly went to.
No one really knows the details behind Chelsie's past - why he's a boy but is treated like a girl, or what would make him so unapologetically sexual and violent at such a young age...

Kane Woods
Species: Salamander
Gender: Male (gay)
Religion: Church of the Animal Christ

Kane was called to the theater in #43 to deal with the lost child, Chelsie. Upon arriving, however, he found himself suddenly re-united with Joel, who he had met in a dark alley two months prior.
Joel was only trespassing at the time, but he put up a chase, and the two started to fight. Kane won - Joel would say he let him win - but the two never made it to the police station, and spent the night together in the back seat of Kane's cruiser.
Since then, Kane and Joel have held a complex friendship.

Tim McNeil
Species: Raccoon
Gender: Male (straight)
Religion: Church of the Shepard

Tim provided face-to-face confrontation to Joel for a few comics, starting with #62. He has accused Joel of being responsible for the death of Chelsie's parents, although he cannot prove it.
Some time later, Joel approached Tim in his confessional booth, and it was revealed that Tim is aware of Joel's apparently-extensive plans. The two fought, and Tim lost.

Lorelei Calley
Species: Wolf
Gender: Female (straight)
Religion: Church of the Shepard

Although thus far only appearing twice, the first time being #122, she is very important in Joel's life. Obviously. Being his mother, and all.
Joel has always had a close relationship with Lorelei, one that became extra important upon the death of his father.
She works as the mayor's assistant, and is paranoid of the increase in human influence of a predominantly furry city.

Cecil Richter
Species: Cheetah
Gender: Male (gay)
Religion: Neo-Egyptian

We met Cecil in comic #61. He is a long-time friend of Nicole, often spending days over his house. He's also a nudist, if you can't tell.
Although he's never at the front of the action, he's important in Nicole's life, and is actually one of Nicole's biggest crushes, behind Joel.

Raj Jansen
Species: Dinosaur
Gender: Female (straight)
Religion: Church of the Animal Christ

Raj is the second-oldest living member of the Jansen family, and due to the fact that the elder, Mariam, is generally too old and tired to exercise authority, Raj acts as the ruling power. She is rather disgusted with Mariam's rule of the family, and taking example from the previous elder, Zule, she has tried her best to instill a strong sense of loyalty in the family, craving the old days of the caste-system she grew up in.
She puts heavy value on the worth of her blood and in personal honor.
Raj first appeared in #34, where she proceeded to abuse Roland and Thonnen. She hates Thonnen, just as she hated Thonnen's mother for marrying a man from the Turunen clan, a rival clan.

Mariam Jansen
Species: Dinosaur
Gender: Female (straight)
Religion: Church of the Animal Christ

Mariam was the head of the Jansen estate until meeting her death in #93. Although a fan of family tradition, she wound up being markedly more liberal than the previous heads of the family, much to the dissatisfaction of her sisters.
In her last years, though, her control grew lax, and she submitted more willingly to the desires of her sisters and children.
In her youth, she was known to be a calm and gentle person, having multiple lovers and laying many children.

Valae Jansen
Species: Dinosaur
Gender: Male (straight)
Religion: Church of the Animal Christ

Valae is a mercenary for hire who lives rather secluded from his clan. He was first seen in #96, and was hired by Raj to forcibly impregnate Thonnen. It was a success, but Raj's plan backfired, as a guilt-ridden Valae confronted the family's council and revealed her secrets.
He has now lost his wife and only daughter to a species-specifc disease. Though pledging the rest of his life to atone for what he has done, he has not been seen again.